Survying Telescopic Alidade instruments like this were used on land as well as at sea for calculating distance and angles.
Beautifully intact instrument, numbered and with maker’s name, see the detailed photo signed at the spirit level, well-functioning sharp view.
Length 38 cm, height approx. 24 cm, will be packaged well and shipped by registered mail in the EU countries free of charge, other countries a small shipping cost surcharge
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Early Science antiques was founded in 1978 by Fred de Vree based in the Netherlands where I can also be visited by appointment. I have been active for 4 decades as an antiqair and auctioneer, the last 20 years of which are specialized in scientific antiques. I visit collectors and fairs in many European countries. looking for special items please feel free to contact me by Phone or email ,if you need any information on my listed items or something you are looking for 0031653132842 firstname.lastname@example.org