Welcome to the ankerstein.center

Here I provide a stone catalog, a system to manage the personal Ankerstein inventory, a database of ankerstein sets and a collection of building plans.

What do I get here

When I started using Ankerstein I found it particularly difficult and error-prone to identify stones by their stone numbers. Similar painful was to find out which buildings I could build with my collection of Anker stones that was composed of a wild mix of stone sets and single stones.
To solve these issues I developed this ankerstein.center.
The ankerstein.center is a catalog of Anker stones, a system to manage a collection of Anker stones, a database of Ankerstein sets and their connections, and a collection of new and historic building plans.
Currently the following features are available:

  • Stone catalog
    • Width, height, length, diameter, arch-span
    • Angle(e.g. of roof stones)
    • Shape (e.g. cuboid, Gothic arch, dome, ...)
    • Stone number GKNF, GKAF
    • Color
    • Search, filter and sort using all attributes
    • Visual search (all stones have images from 2 angles which are exact to scale. Scale fidelity is guaranteed on any monitor)
    • Isometric views
    • Impressed surfaces
  • Ankerstein sets
    • Series, name, password, content
    • Search, filter and sort for all attributes
    • List all stones and their amounts in a set with all attributes
    • Search, filter and sort the content of a set using the same stone attributes as in the catalog
    • Packing plans and builder's packing plans
    • List all possible supplement sets and predecessor sets of a specific set
    • Visualization of all connections between sets
  • Manage personal Ankerstein collection
    • Compile own collection from several Ankerstein sets
    • compile own "sets" from single stones
    • maintain shortage counts
    • Search sort and filter the set composition of the collection
    • List stones and their amounts in the collection with all attributes
    • Search, filter and sort the content of the collection using the same stone attributes as in the catalog
    • Compare collection with the requirements of building plans
  • Building plans
    • Historic and new building plans
    • Building title, leaflet, author, series, set
    • Search, filter and sort for all attributes
    • Preview images
    • Building plan (PDF)
    • Layers
    • Photos
    • Comments / Explanations
    • Error reports
    • Requirements / stone lists with all attributes
    • Search, filter and sort the requirements of a building plan using the same stone attributes as in the catalog
    • Compare own collection with the requirements of a building plan
    • Verify that a personal composition of buildings can be build with the own collection
  • Other
    • No installation or download required
    • Only a browser (IE (Version 8 or above), Firefox, Chrome, Safari) is necessary
    • English, German and Hungarian (other languages on demand)
    • Easy to use
    • Runs fine in the browser of mobile devices or tablets
    • Regular content updates
    • Continuously new features in development



Legal Disclosure
Information in accordance with section 5 TMG
Michael Erhard
Dornatorbogen. 24
82061 Neuried

Telephone: +49 173 89 70 249
E-Mail: me@lintugal.com
Internet address: https://ankerstein.center

How to get access

To get Access to the ankerstein.center please send me an email with the following information:

  • Email
  • First Name
  • Last Name
As soon as possible I will send you an email with the credentials to login.
You can use this system for free. I provide this system as is, without any warranty, and I don't guarantee availability and functionality of it.
I do not guarantee the correctness of the functionality and the correctness of the content of this site!


Accountability for content
The contents of our pages have been created with the utmost care. However, we cannot guarantee the contents' accuracy, completeness or topicality. According to statutory provisions, we are furthermore responsible for our own content on these web pages. In this context, please note that we are accordingly not obliged to monitor merely the transmitted or saved information of third parties, or investigate circumstances pointing to illegal activity. Our obligations to remove or block the use of information under generally applicable laws remain unaffected by this as per §§ 8 to 10 of the Telemedia Act (TMG).

Accountability for links
Responsibility for the content of external links (to web pages of third parties) lies solely with the operators of the linked pages. No violations were evident to us at the time of linking. Should any legal infringement become known to us, we will remove the respective link immediately.

Our web pages and their contents are subject to German copyright law. Unless expressly permitted by law (§ 44a et seq. of the copyright law), every form of utilizing, reproducing or processing works subject to copyright protection on our web pages requires the prior consent of the respective owner of the rights. Individual reproductions of a work are allowed only for private use, so must not serve either directly or indirectly for earnings. Unauthorized utilization of copyrighted works is punishable (§ 106 of the copyright law).

User generated content
When you post Content in connection with the Services, it belongs to you - however, you're giving us permission to use that Content in connection with our Services and make the Content available to others. We can edit or remove your Content from our Services at any time for any reason. Don't post any content that is not yours or that you do not have permission to post!
When you provide User-Generated Content to us through the Services of the ankerstein.center, you grant us and our users a non-exclusive, irrevocable, royalty-free, freely transferable, sublicensable, worldwide right and license to use, host, store, cache, reproduce, publish, display (publicly or otherwise), perform (publicly or otherwise), distribute, transmit, modify, adapt (including, without limitation, in order to conform to the requirements of any networks, devices, services, or media through which the Services are available), create derivative works of, and otherwise exploit such User-Generated Content in connection with any and all Services. You acknowledge and agree that:
(a) we have the right to arrange the posting of User-Generated Content in any way we desire;
(b) we have no obligation to provide you with any credit when using your User-Generated Content, but if we chooses to provide you with credit, the size and placement of the credit is at our sole discretion; and
(c) you are not entitled to any compensation or other payment from us in connection with the use of your User-Generated Content.
The rights you grant in this license are for the limited purposes of allowing us to operate and allow other users to use the Services in accordance with their functionality, improve the Services, and develop new Services. Notwithstanding the above, we will not make use of any of your User-Generated Content in a manner that is inconsistent with the privacy settings you establish within our Services. For information on managing your privacy settings for the Services, see the Privacy Policy.
We reserve the right to monitor, remove or modify User-Generated Content for any reason and at any time, including User-Generated Content we believe violates these Terms, or actual law.
You agree you will respect the intellectual property rights of others. You represent and warrant you have all the necessary rights to grant us the foregoing license for all User-Generated Content you submit in connection with the Services and will indemnify us for any breach of this representation and warranty.

Privacy Statement

This privacy and cookie policy (the "policy") becomes effective on May 25, 2018 for all users, provided that enhanced data protection rights in this policy required by the EU General Data Protection Regulation (including, without limitation, the "EEA Resident Rights" described in the "Other Important Privacy Information" section) become effective on May 25, 2018 for all EU-resident users who are natural persons.
We, the operator of the ankerstein.center - currently Michael Erhard - explain in this policy how we collect, process and/or use information that we receive via our websites, emails we send, and mobile applications (collectively, the "ankerstein.center" or "platform") that link to this policy, as amended from time to time. This policy describes how we collect, process, use, share and secure the personal information you provide. It also describes your choices regarding use, access, and correction of your personal information. For purposes of this policy, personal information shall mean any information relating to an identified or identifiable natural person.
This policy applies only to information we collect, process and use through the platform. This policy does not apply to information that we collect through other channels, such as information that we collect offline, from other websites or from emails you send us.
Information We Collect
We collect information about you to provide our services. In order for us to best provide our services to you (and to help make it feasible for us to do so), it is essential that we are able to collect and use the information as described in this policy. This means that the data collection is largely necessary for fulfilling the relationship we have with you, and where that is not the case, we have a legitimate interest in collecting the information described below.
Information You Give Us
When you fill out registration forms, or provide us with other personal information actively, we collect that information for processing and use in accordance with this policy. Because we change our offerings and features from time to time, the options you have to provide us with personal information also may change, but here are some examples of situations in which you will have the opportunity to provide personal information to us:
Creating an account;
Contacting us for technical support;
Creating and modifying remarks for objects like stones, stone sets, building plans or similar;
Maintenance of your stone inventory;

Depending on how you interact with our platform, the personal information we collect from you may vary. For example, to create an account we may ask only for an email address, first name, last name, country, salutation and password. We also store if you are member of the CVA. In addition we also collect and store certain information associated with actions you take. For example, when you search for a stone, we store the search definition so we can show you the same search result when reopening the page.
Information We Collect Automatically
When you use the platform, your device is automatically providing information to us so we can respond and customize our response to you. The type of information generally includes technical information about your computer, such as your IP address or other device identifier, the type of device you use, and operating system version.
We do not store this data. Information like the URLs of our web pages that you visited, URLs of referring and exiting pages, page views, time spent on a page, number of clicks, platform type, location data or other information about how you used the platform is also not collected or stored by us.
The only exception to this is that we store your last login date and time.

Automated means of data collection include the following:
We use cookies solely to remember users’ settings and for authentication. You can control the use of cookies at the individual browser level, but if you choose to disable cookies, it may limit your use of certain features or functions on our website or service.
How We Use Information
We use the information we collect to provide our services. In order for us to best provide our services (and to help make it feasible for us to do so), it is essential that we are able to collect and use the information as described in this policy. So it is largely necessary for fulfilling the relationship we have with you.
Your email is required to communicate with you, and it is part of your credentials necessary to login. Your password is also required for a successful login. The salutation allows us to approach you with the right salutation. Your first name and your last name is necessary to name you as author for publicly viewable remarks and building plans that you created or designed. Language and country are required to show information in country-specific formats (weight, length, date, ...) and to show the user interface and help in the language you specified. The CVA membership we need to be able to provide content for you that is restricted to CVA members. Settings like scaling, default caliber, default color or the discrepancy tolerance level are increasing the usability of the ankerstein.center. We automatically collect information like the last search criteria, sort order, result sizes or similar separate for each area. This information is solely collected to allow us to display the same search results when repeatedly accessing a page.
Why Is It Necessary To Register / Login
An essential part of the functionality of the ankerstein.center is the maintenance of your own inventory. This information is then used in most other areas of the platform, so we can provide useful personalized data. For example, with every building plan we show if your collection allows you to build the building. A second important functionality is the help to identify stones, which would not be possible without an individual setting of the scaling. All this requires that the inventory data and settings are separate for each individual user. That makes it mandatory to register and login to the ankerstein.center.
How We Share / Distribute Information
We use service providers in Germany (currently just web-hosting through 1blu GmbH) to help us deliver our service and run our business subject to strict confidentiality agreements. These companies not authorized to use your personal information, and do not have access to it.
We do not share your personal data with any third party.
Cookies are small pieces of data that are stored on your computer, mobile phone, or other device when you first visit a page. We use cookies to help us recognize you on the platform and to enhance your user experience. After you register on the platform, we may connect information we collect from the Cookies set by us with other information received from you. The provision of your data via Cookies is voluntary except for those Cookies that we place on your device because we need them for the performance of our platform and our services.
What types of Cookies do we use?
We use two types of Cookies on the platform: "session cookies" and "persistent cookies." Session Cookies are temporary Cookies that remain on your device until you leave the platform. A persistent Cookie remains on your device for much longer until you manually delete it (how long the Cookie remains will depend on the duration or "lifetime" of the specific Cookie and your browser settings).
What are Cookies used for?
We use Cookies for things like:
We use Cookies to help us determine whether or not you've signed in to the platform and to keep you signed in during visits as you access different pages.
Preferences and Features
We use Cookies to enable features and help us provide you with personalized device specific content, such as showing correct scaled stones.
Opting Out of Cookies
We use Cookies that are necessary for us to provide the services you use and you cannot opt out of these Cookies on the platform. You are able to disable placement of some (but not all) Cookies by setting your browser to decline cookies, though this may worsen your user experience. Additionally, you can also control, manage and/or delete cookies via your browser settings. A useful resource for information about deleting and controlling cookies can be found at AboutCookies.org.
EEA Resident Rights
If you are a resident of the European Economic Area, you have the following data protection rights:
If you wish to access, correct, update or request deletion of your personal information, you can do so at any time by contacting us via Email (me@lintugal.com). In addition, you can object to processing of your personal information, ask us to restrict processing of your personal information or request portability of your personal information. Again, you can exercise these rights by contacting us via Email (me@lintugal.com). Similarly, if we have collected and processed your personal information with your consent, then you can withdraw your consent at any time. Withdrawing your consent will not affect the lawfulness of any processing we conducted prior to your withdrawal, nor will it affect processing of your personal information conducted in reliance on lawful processing grounds other than consent. You have the right to complain to a data protection authority about our collection and use of your personal information. For more information, please contact your local data protection authority. We respond to all requests we receive from individuals wishing to exercise their data protection rights in accordance with applicable data protection laws. Notwithstanding the foregoing, we reserve the right to keep any information in our archives that we deem necessary to comply with our legal obligations, resolve disputes and enforce our agreements.
Choices Regarding Your Personal Information
In addition to your rights outlined above, if you are an individual consumer member, you can manage your account settings in the "Preferences" page on the platform.
We will send you service-related announcements when we believe it is necessary to do so. Generally, you cannot opt-out of these announcements, which are not primarily promotional in nature. If you do not wish to receive these announcements, you have the option to deactivate your account.
Close Your Account
If you'd like to close your account, you can do so via Email (me@lintugal.com). When you close your account, you will no longer have access to the login area, and any content, data and settings you have submitted will be pulled from the platform, but we reserve the right to keep any information in a closed account in our archives that we deem necessary to comply with our legal or regulatory obligations, resolve disputes and enforce our agreements. If, after you close your account, you wish to know which personal information we keep you can proceed in accordance with your rights set out above.
How Long We Keep Your Personal Information
We keep your personal information only so long as we need it to provide the platform to you and fulfill the purposes described in this policy. Retention periods can vary significantly based on the type of information and how it is used. Our retention periods are based on criteria that include legally mandated retention periods, pending or potential litigation, our intellectual property or ownership rights, contract requirements, operational directives or needs, and historical archiving. When we no longer need to use your personal information and there is no need for us to keep it to comply with our legal or regulatory obligations, resolve disputes and enforce our agreements, we’ll remove it from our systems.
Security Safeguards
We employ physical, electronic, and managerial measures to safeguard the information we collect online. However, no company can fully eliminate security risks, so we cannot make guarantees about any part of our services. You are responsible for keeping your username and password secret. Once you have registered with us, we will never ask you for your password. Please create a unique password for your ankerstein.center account and do not use it for any other web services or applications. Do not share your password with anyone else.
Remarks that violate our Terms of Use
We actively monitor the platform for postings that violate our Terms of Use. If we detect fraudulent activity, we remove the job posting from the platform. However, fraudulent job postings can sometimes appear If you see a suspicious posting, please contact us immediately via Email (me@lintugal.com).
Privacy of Minors
To access or use the platform you must be 13 years of age or older and, if under 18 or the age of majority in your jurisdiction, your use of platform must be under the supervision of a parent or guardian or other responsible adult. If you become aware that a child has provided us with personal information without parental consent, please contact us via Email (me@lintugal.com). If we become aware that a child under 13 has provided us with personal information without parental consent, we remove such information and terminate the child's account.
Data Controller
The information about you that we collect, process and/or use through the platform is controlled by us - Michael Erhard. The data for our services are hosted and provided only in Germany.
Data Protection Officer
You may reach our data protection officer via Email (me@lintugal.com).
Updates to Our Privacy Policy
We may revise this policy from time to time by posting an updated version on the platform. This version of the policy will be effective for you as described at the beginning of the policy. Further revisions of this policy will become effective as follows: The revised policy will be effective immediately for unregistered users and users registering accounts or otherwise acknowledging the policy on or after the revision date. For other users who registered accounts before the revision date, it will also become effective immediately. However they can object to the new policy within thirty (30) days after the revision date. If we make a change that we believe materially reduces your rights or increases your responsibilities, we will notify you by email (sent to the email address specified in your account)prior to the change becoming effective. We may provide notice of changes in other circumstances as well. We encourage you to periodically review this page for the latest information on our privacy practices. Your continued use of the platform is subject to the most current effective version of this policy.
Contact Us
If you have any questions or suggestions regarding this policy, please contact us via Email (me@lintugal.com).

Michael Erhard
Dornatorbogen 24
D-82016 Neuried

© 2013 - 2024 by Michael Erhard (Michael.Erhard@gmail.com) - All rights reserved.