Sounding quintant prism

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Sounding quintant detachable 90° prism on a bridge to be secured to the frame by two spring clips.

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ID:	NAV1206.2
Type:	Sounding quintant prism
Display location:	Not on display
Creator:	Heath & Co. Ltd
Date made:	circa 1950
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Overall: 82 mm x 157 mm x 55 mm
Parts:	Sounding quintant Sounding quintant box (NAV1206.1) Sounding quintant prism (NAV1206.2) Sounding quintant shade eyepiece (NAV1206.3) Sounding quintant spanner (NAV1206.4) Sounding quintant adjusting pin (NAV1206.5) Sounding quintant box key (NAV1206.6)