| KLEY, JACOB | 
Holland, 1716-91, MIM NIM PHIM | 
Octants = LEY (1754), ROT, Visserijmuseum, Vlaardinger, Leiden Observatory; Astrolabe = Auction, 1798; Demonstration Models = TEY, UTR; Backstaff = AMST; Pleinschaal = AMST; Inclined Plane = X; Hadley Quadrant = Marine Museum, Horten.  | 
a pleinschaal is a form of Gunter rule.  | 
Rotterdam.  | 
Rooseboom 1; Mörzer Bruyns 1, 2 and 4.; G.L'E. Turner 7; Daumas 1; Bryden 9; RSW.  | 
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