Protractor inscipted J.M. Kleman & Zoon koninklijke instrument makers Amsterdam ( Royal instrument maker )
Brass protrector of 180 degrees the arc with iron needle at the centre and a pointer with veneer measurment L 44 cm
Note the Kleman firm made this protractor according to thr specifications of Captain C. Jager For a similair model of the same maker see the Rijksmuseum Amsterdam Object numbre NG-MC-860.
Literature J.M. Obreen Catalogus der verzameling modellen van het department van Marine The Hague 1858 no 560
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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 [email protected]