Terms and conditions of use

This website was created to allow the whole world to learn about the interesting history of (hydrographic) survey instruments. Feel free to browse and learn as much as you like.


NONE of the instruments shown are on sale. If there are any instruments to sell this happens through other channels such as Catawiki and Marktplaats. Don't ask me about sales or prices as these will not be answered.


Images and text shown on this website are the property of HJs Boeken en Insrumenten. The use of images and/or texts is licensed according to CC BY-NC-SA. In no way shall the images and/or texts be used for commercial purposes unless with express agreement from HJs Boeken en Instrumenten.


Much care has gone into creating this website. However it is a work of humans and may contain unforeseen errors. Images and texts are therefore provided 'as-is'. HJs Boeken en Instrumenten is in no way responsible or to be held liable for the use of the contents of this website and its materials.


If you decide to ask a question and provide your personal information for that, your information will only be used in contacting you about the question. Your question (aka the e-mail sent) will be kept in our database (mailbox) for future reference and to send you updates. on your question if applicable Your data will not be sold to third parties or any other inappropriate use.