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HEATH & CO. LTD., LONDON FOR LOUIS WEULE OF SAN FRANCISCO
细节
A late 19th century 10½ inch radius vernier sextant
Heath & Co. Ltd., London for Louis Weule of San Francisco
with a black painted frame and inset silvered scale divided to 155 degrees, vernier with spring clamp and fine-screw adjustment, sighting lenses, seven shades, two mirrors and mahogany handle, and marked "Hezzaninth"/Endless Tangent Screw/Automatic Clamp; contained within a fitted box with an additional lens a set pin
11 x 11¾ in. (27.9 x 29.9 cm.) box
Heath & Co. Ltd., London for Louis Weule of San Francisco
with a black painted frame and inset silvered scale divided to 155 degrees, vernier with spring clamp and fine-screw adjustment, sighting lenses, seven shades, two mirrors and mahogany handle, and marked "Hezzaninth"/Endless Tangent Screw/Automatic Clamp; contained within a fitted box with an additional lens a set pin
11 x 11¾ in. (27.9 x 29.9 cm.) box