Testing and Metrology 

Philipp-Reis-Strasse 4-6
64404 Bickenbach 

Phone: +49 6257 9720-0 
Fax: +49 6257 9720-77

GTM Praha s.r.o. 
Prosecká 811/76 a 
19000 Praha 9 
Czech Republic

Phone: +420 286 891 392 
Fax: +420 286 891 392



Data protection declaration

Area of application

This data protection declaration explains the nature and the scope of how our website collects and uses your personal data. The responsible parties within the terms of the General Data Protection Regulation (GDPR) are the legal representatives of GTM Testing and Metrology GmbH (see legal notice).

Data transmission/data logging

When you visit this site, the web server automatically records log files that cannot be matched to a specific person. This data contain e.g. the browser type and version, the operating system used, the referrer URL (the site previously visited), the IP address of the querying computer, the access data and time of the server query and the client’s file query (file name and URL). This data is only collected for the purposes of statistical evaluation and helps us to make operation of the website more secure and to optimise our offering. This information is not made available to third parties for commercial or non-commercial purposes.


When you visit this site, cookies (small text files) are saved on your computer by Typo3 (this page’s content management system). Your browser uses these cookies, which increases the user friendliness and security of our website. These cookies, however, are only used to record the current session and not to collect your personal data for tracking or similar purposes.


Cookie Consent Tool from

This website uses a cookie consent tool with technology from Usercentrics GmbH, Rosental 4, 80331 Munich (hereinafter "Usercentrics") to obtain and document user consent for cookies
and cookie-based applications requiring consent. When you visit our website, the following personal data is transferred to Usercentrics:


- Your consent(s) or revocation of your consent(s).

- Your IP address

- Information about your browser

- Information about your terminal device

- The time of your visit to the website


Furthermore, Usercentrics stores a cookie in your browser in order to be able to allocate the consent(s) granted or their revocation to you. The data collected in this way is stored until you
request us to delete it, delete the Usercentrics cookie yourself or the purpose for storing the data no longer applies. Mandatory legal storage obligations remain unaffected.
This data processing is carried out pursuant to Art. 6 (1) lit. f DSGVO on the basis of our legitimate interest in a legally compliant, user-specific and user-friendly consent management
for cookies and thus in a legally compliant design of our website. Further legal basis for the described data processing is furthermore Art. 6 para. 1 lit. cDSGVO. As the responsible party, we are subject to the legal obligation to make the use of technically unnecessary cookies dependent on the respective user consent. Further information on the use of data by Usercentrics can be found in the Usercentrics data
protection declaration at



Use of personal data

Your personal data is only collected or processed if you give us these details voluntarily, e.g. as part of a query via the contact form, when you evaluate our calibration service or when you subscribe to our info e-mail or newsletter. If there are no pressing reasons not to do so in conjunction with a business transaction, you can rescind the approval of your personal data being stored in writing (e.g. via e-mail or fax) and with immediate effect. Your data is not passed to third parties unless doing so is required by legal provisions.



The security of your data

The personal data you provide us with is secured using technical and organisational security measures that ensure it is inaccessible to unauthorised third parties. If you need to send us very sensitive data or information, it is recommended that you use the postal service as the complete data security of e-mail cannot be guaranteed.


Info e-mail/newsletter

When you sign up to receive our info e-mail or newsletter, the personal data you give us will be used exclusively for this purpose. In signing up for the info e-mail/newsletter and entering your data on our website, you will automatically receive a confirmation e-mail that we use to check the validity of the e-mail address you give us. You also need to confirm that you have received the confirmation e-mail. This is used to validate the validity of the e-mail address. Your data is treated confidentially and is not passed to third parties. You can rescind your permission to have your personal data stored and used for sending the info e-mail or newsletter at any time. Every info e-mail or newsletter contains a link to this effect.


LinkedIn Analytics and LinkedIn Ads

    1. We use the conversion tracking technology and the retargeting function of LinkedIn Corporation on our website.
    2. With the help of this technology, visitors to this website can be served personalized ads on LinkedIn. Furthermore, the possibility arises to create anonymous reports on the performance of the advertisements as well as information on website interaction. For this purpose, the LinkedIn Insight tag is embedded on this website, which establishes a connection to the LinkedIn server if you visit this website and are logged into your LinkedIn account at the same time.
    3. In the privacy policy of LinkedIn at you will find more information on data collection and data use, as well as the options and rights to protect your privacy. If you are logged in to LinkedIn, you can deactivate the data collection at any time at the following link:


Google Tag Manager

This website uses the Google Tag Manager. This service allows website tags to be managed through an interface. The Google Tool Manager only implements tags, does not set cookies and does not collect any personal data. The Google Tag Manager triggers other tags that may collect personal information. However, the Google Tag Manager does not access this data. If deactivated at domain or cookie level, it will remain valid for all tracking tags implemented with Google Tag Manager.

Google Maps

We use Google Maps to provide location-based services on our website. We make use of the Google Maps service in order to help you find our branches and locations. To this end, we load a Google Maps image containing our location. Google Maps may thus be able to obtain information about your identity and may store it on external Google Maps servers in the U.S. or other countries. You can find further information about Google Maps and its data protection regulations within Google’s privacy policy


Google Display & Video 360 (previously Doubleclick Bid Manager)

On this website we use the tool Display & Video 360 from Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland, which collects data for analysis, marketing and optimization purposes, and through this helps us to improve our marketing measures and our website. The data we collect are used by Display & Video 360 to link advertising contacts and clicks on advertisements with any use of our website linked to this. This enables us to determine whether Internet users who have seen our adverts visit our website or what products they are interested in. This helps us to use our advertising budget more efficiently. We can also use the collected data for sending advertising based on your interests (for instance, products you have looked at).

Pseudonymous online identification numbers (for instance cookie IDs or IP addresses) are used for the data collection. In this process no unambiguous user-related data, such as name or address, are stored. All the IDs we use only enable the recognition of your terminal device and your Internet browser. Without your separate explicit approval, we do not use the collected data to personally identify you as a user of our website.

We hereby notify you that in the case of users who have registered with Google, Google possibly links your visit to this website with the registered data. You can find out what exactly Google does with your data on Google’s data protection (privacy policy) web pages, if you click the following link:

At the following link you will find an explanation on how you can deactivate Google on your computer or your mobile terminal device:


Campaign Manager (previously DoubleClick by Google)

This website also uses the Google online marketing tool Campaign Manager. Campaign Manager uses cookies in order to place adverts which are relevant for the user, to improve the reports for campaign performance or to prevent a user seeing the same adverts several times. Via a cookie ID Google records which adverts are placed in which browser, and can hence prevent them being shown several times. Furthermore, with the aid of cookie IDs Campaign Manager can record so-called conversions, which are related to the ad requests. For instance, this is the case if a user sees a Campaign Manager advertisement and later accesses the website of the advertiser with the same browser and buys something there. According to Google, Campaign Manager cookies do not contain any personal information.

Because of the marketing tools that are used, your browser automatically establishes a link with Google’s server. We have no influence on the scope and further use of the data which are collected by Google because of the use of this tool, and consequently hereby notify you according to the information we have regarding this: Through the integration of Campaign Manager, Google receives the information that you have called up the respective part of our website or have clicked on an advert we have placed. Insofar as you are registered with a Google service, Google can assign your visit to your account. Even if you are not registered with Google or have not logged in, it is possible that the provider may find out your IP address and save it.

Furthermore, the Campaign Manager (DoubleClick Floodlight) cookies enable us to understand whether you perform specific actions on our website, after you have called up our display/video adverts on Google or on another platform via Campaign Manager or have clicked on this (conversion tracking). Campaign Manager uses this cookie to understand the content which you have interacted with on our website, in order to be subsequently able to send targeted advertising.

You can prevent participation in this tracking process: a) through an appropriate setting of your browser software, in particular the suppression of cookies means that you will not receive any cookies from third-party vendors; b) by deactivating cookies for conversion tracking, by setting your browser to block cookies from the domain,, although this setting is deleted if you delete your cookies; c) by deactivating interest-related adverts of the vendors who are part of the self-regulating campaign “About Ads” via the link, although this setting is deleted if you delete your cookies; d) through permanently deactivating in your browsers Firefox, Internet Explorer or Google Chrome at the link, e) using the appropriate cookies settings. We hereby inform you that in this case you may not be able to fully use all functions of this offer.

You can also prevent Google collecting the data generated by the cookies about your use of the website and the processing of this data by Google through downloading the browser plugin available at under “Display settings”, “Extension for Campaign Manager deactivation” and installing it.

Further information on Campaign Manager is available at as well as data processing in general at Google: Alternatively you can visit the website of Network Advertising Initiative (NAI) at


Videos by Vimeo

In order to be able to show content in a simple and comprehensible way, our website uses embedded videos that are provided by an external host (Vimeo). When you start a video, a Vimeo server must be called up for technical reasons. Vimeo may thus be able to obtain information about your identity and may store it on external Vimeo servers in the U.S. or other countries. You can find further information about Vimeo and its data protection regulations within Vimeo’s privacy policy



Our website uses services of Matterport Inc, 352 E. Java Dr. Sunnyvale, CA 94089, USA. Virtual tours of some areas of our company building are displayed. When you visit one of our pages equipped with a Matterport 3D tour, a connection to Matterport's servers is established. Personal data (your IP address, browser version and displaying device, origin and destination URL and the ID of the respective 3D tour) are transmitted to the Matterport servers in the USA. If you have a Matterport account and are logged into it, you enable Matterport to assign your surfing behavior directly to your personal profile. You can prevent this by logging out of your Matterport account.


Matterport is only used with your consent pursuant to Art. 25 (1) TTDSG or Article 6 (1) a DSGVO.

For more information on how Matterport implements the DSGVO and handles user data, please see Matterport's privacy policy under the following link:


Use of SalesViewer® technology

This website uses SalesViewer® technology from SalesViewer® GmbH on the basis of the website operator’s legitimate interests (Section 6 paragraph 1 lit.f GDPR) in order to collect and save data on marketing, market research and optimisation purposes. In order to do this, a javascript based code, which serves to capture company-related data and according website usage. The data captured using this technology are encrypted in a non-retrievable one-way function (so-called hashing). The data is immediately pseudonymised and is not used to identify website visitors personally. The data stored by Salesviewer® will be deleted as soon as they are no longer required for their intended purpose and there are no legal obligations to retain them. The data recording and storage can be repealed at any time with immediate effect for the future, by clicking on in order to prevent SalesViewer® from recording your data. In this case, an opt-out cookie for this website is saved on your device. If you delete the cookies in the browser, you will need to click on this link again.



This website uses functions of the web analysis service Google Analytics. The provider is Google Inc., 1600 Amphitheatre Parkway Mountain View, CA 94043, USA.
Google Analytics uses so-called “cookies”, which are text files that are saved onto your computer and that allow for an analysis of your use of the website. Generally, the information generated by the cookie about your use of this website is transmitted to a Google server in the USA and stored there. More information on the handling of user data with Google Analytics can be found in Google’s Privacy Policy:


Google Ads Conversion Tracking:

This website uses the “Google Ads Conversion Tracking” function of Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland (“Google”). Google Ads Conversion tracking
uses “cookies”, or text files that are stored on your computer and allow analysis of your use of the website when you have clicked on a Google ad. The cookies are valid for a maximum
period of 90 days. This involves no storage of personal data. As long as the cookie is valid, both Google and we as the website provider can recognize that you have clicked on an ad and
have reached a particular target page (e.g. an order confirmation or newsletter subscription page). These cookies cannot be tracked using different websites of multiple advertisers. The
cookie causes conversion statistics to be created in “Google Ads”. These statistics include the number of users who have clicked on one of our ads. They also count how many users have
reached a target page that has been tagged with a conversion tag. However, the statistics contain no data that could be used to identify you. You can prevent cookies from being saved
on your hard drive by selecting “Accept no cookies” in your browser settings (in MS Internet Explorer under “Extras > Internet Options > Security > Settings”; in Firefox under “Extras >
Settings > Security > Cookies”); please be aware, however, that in this case you may not be able to fully use all functions of this website. By using this website you agree to the
processing of the collected data by Google in the aforementioned manner and for the aforementioned purpose. Additional information about how Google uses conversion data and
about Google’s data privacy policy is available at:,“


Google Remarketing and “Similar Target Groups”

This website uses the Remarketing and “Similar Target Group” function of Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland (“Google”). This makes it possible
to specifically address you with personalized and interest-related advertising when you visit websites in the “Google Display Network”. “Google Remarketing” and the “Similar Target
Groups” function use “cookies”, or text files that are stored on your computer and allow analysis of your use of the website. These text files contain information about your visits, as
well as anonymized data about your use of the website. This involves no storage of personal data. If you visit another website in the “Google Display Network”, you may be shown
advertising that with high probability takes into consideration products and information that was previously viewed on our website. You can prevent “Google Remarketing” and “Similar
Target Groups” by configuring your browser software to not allow the saving of cookies. Please be aware, however, that in this case you may not be able to fully use all functions of
this website. You can also prevent collection of the data generated by the cookie and related to your use of the website from being sent to Google and the subsequent processing of this
data by Google by downloading and installing the browser plug-in available via the following link: You can also deactivate the use of cookies by
third-party providers by visiting the deactivation page of the Network Advertising Initiative under where you can implement the additional
information on the opt-out function. You can find Google’s data privacy policy on remarketing with additional information here:


Google Maps

We use Google Maps to provide location-based services on our website. We make use of the Google Maps service in order to help you find our branches and locations. To this end, we
load a Google Maps image containing our location. Google Maps may thus be able to obtain information about your identity and may store it on external Google Maps servers in the U.S.
or other countries. You can find further information about Google Maps and its data protection regulations within Google’s privacy policy


Browser Plugin

You can prevent the storage of cookies through your browser software’s corresponding setting; however, we would like to make you aware that, in this case, you may not be able to use all the functions of this website in their entirety. Furthermore, you can prevent the collected data generated through the cookie relating to your usage of the website (including your IP address) from being sent to Google as well as the processing of this data by Google by downloading and installing the available browser plugin under the following link:


Objection to data collection

You can prevent the collection of your data through Google Analytics by clicking the following link. An opt-out cookie will be stored that prevents the collection of your data during future visits to this website: Deactivate Google Analytics


Contract data processing

We have entered into an agreement with Google for contract data processing and fully implement the strict requirements of the German data protection authorities when using Google Analytics.


IP Anonymization

We use the “Activation of IP Anonymization” function on this website. This way, your IP address will be truncated by Google within member states of the European Union or in other member countries that are party to the agreement throughout the European economic area. Only in exceptional cases will the full IP address be transferred to a Google server in the United States and truncated there. Google will use this information on behalf of the operator of this website for the purpose of evaluating your use of the website, compiling reports on website activity, and providing the website operator with further services connected to the use of the website and the Internet. The IP address transmitted by your browser as part of Google Analytics will not be merged with any other data held by Google.


YouTube with enhanced privacy

This website embeds videos from the website YouTube. The operator of the pages is Google Ireland Limited, ("Google"), Gordon House, Barrow Street, Dublin 4, Ireland.

We use YouTube in extended data protection mode. According to YouTube, this mode has the effect that YouTube does not store information about visitors to this website before they view the video. However, the transfer of data to YouTube partners is not necessarily excluded by the extended data protection mode. Thus, YouTube - regardless of whether you watch a video, YouTube connects to the Google DoubleClick network.

As soon as you start a YouTube video on this website, a connection to the servers of YouTube servers is established. This tells the YouTube server which of our pages you have visited. If you are logged into your YouTube account, you enable YouTube to associate your surfing behavior directly with your personal profile. You can prevent this by logging out of your YouTube account.

Furthermore, after starting a video, YouTube may store various cookies on your end device or use comparable recognition technologies (e.g. device fingerprinting). In this way, YouTube can obtain information about visitors to this website. This information is used, among other things video statistics, to improve the user experience and to prevent fraud attempts.

If necessary, further data processing operations may be triggered after the start of a YouTube video, over which we have no control.

YouTube is used in the interest of an appealing presentation of our online offers. This represents a legitimate interest within the meaning of Art. 6 para. 1 lit. f DSGVO. If a corresponding consent was requested, the processing is carried out exclusively on the basis of Art. 6 para. 1 lit. a DSGVO and § 25 para. 1 TTDSG, insofar as the consent allows the storage of cookies or the access to information in the user's terminal device (e.g. device fingerprinting) within the meaning of the TTDSG. The consent can be revoked at any time.

For more information about data protection at YouTube, please refer to their privacy policy at


Changes to this data protection declaration

We will update the guidelines listed here from time to time to protect your personal data. You should view these guidelines occasionally in order to stay up to date about how we protect your data and continuously improve the content of our website. If we should make significant changes to how we collect, use and/or pass on the personal data you give us, we will let you know with a clear and easily visible notice on our website. By using our website, you declare that you agree to the conditions of these guidelines to protect personal data. If you have any queries regarding these data protection provisions, please contact us using the Contact page.