Pocket bubble sextant ruler

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Pocket bubble sextant transparent plastic 6'' ruler.

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ID:	ZBA0747.1
Type:	Pocket bubble sextant ruler
Display location:	Not on display
Creator:	G. Felsenthal & Sons
Date made:	ca. 1946
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Overall: 1 mm x 156 mm x 13 mm
Parts:	Bubble Circle Sextant (Pocket bubble sextant) Pocket bubble sextant ruler (ZBA0747.1) Pocket bubble sextant pencil (ZBA0747.2) Pocket Bubble Sextant Instructions for use in finding Longitude and Latitude (Pocket bubble sextant instruction booklet) (ZBA0747.3) Pocket bubble sextant circular protractor (ZBA0747.4) Pocket bubble sextant protractor (ZBA0747.5) Pocket bubble sextant wallet (ZBA0747.6)