HEATH & Co Ltd, Crayford, London.
Varnished brass stigmograph with three extendable rulers.
Signed.
Length : 39 / 64 cm.
Wear, scratches and minor wear bumps; a few stains.
In its stained wooden case (stains, scratches, dents).

Instrument used by hydrographic services to survey nautical charts.

ATTACHED:
- two ebony and copper parallel rulers.
The large one from "Capt Field's Improved... Prouds Ltd Sydney".
The small one by "Belcher Bros & Co N.Y."
Length: 61.5/84.2 - 45.8/65.3 cm. Scratches, stains, oxidation.
- a slide rule in its leather case (damaged).
Length: 28 cm.
- two modern rulers, one of which is a protractor, in cases.
Length: 38 cm.
Live Friday 20 March・14:00 (Europe/Paris)
Lot no. 144

HEATH & Co Ltd, Crayford, London. Varnished brass stigmograph with three extendable rulers. Signed. Length : 39 / 64 cm. Wear, scratches and minor wear bumps; a few stains. In its stained wooden case (stains, scratches, dents). Instrument used by hydrographic services to survey nautical charts. ATTACHED: - two ebony and copper parallel rulers. The large one from "Capt Field's Improved... Prouds Ltd Sydney". The small one by "Belcher Bros & Co N.Y." Length: 61.5/84.2 - 45.8/65.3 cm. Scratches, stains, oxidation. - a slide rule in its leather case (damaged). Length: 28 cm. - two modern rulers, one of which is a protractor, in cases. Length: 38 cm.

Estimate
€90 - €120
Result
€80
Buyer's premium
26.4%
HEATH & Co Ltd, Crayford, London. Varnished brass stigmograph with three extendable rulers. Signed. Length : 39 / 64 cm. Wear, scratches and minor wear bumps; a few stains. In its stained wooden case (stains, scratches, dents). Instrument used by hydrographic services to survey nautical charts. ATTACHED: - two ebony and copper parallel rulers. The large one from "Capt Field's Improved... Prouds Ltd Sydney". The small one by "Belcher Bros & Co N.Y." Length: 61.5/84.2 - 45.8/65.3 cm. Scratches, stains, oxidation. - a slide rule in its leather case (damaged). Length: 28 cm. - two modern rulers, one of which is a protractor, in cases. Length: 38 cm.