NEGRETTI & ZAMBRA POCKET BAROMETER COMPASS COMPENDIUM NO 15205 c1935 – Sold

Negretti & Zambra Pocket Barometer No 15205 with Compass to Verso_5a
Negretti & Zambra Pocket Barometer No 15205 with Compass to Verso_6a
Negretti & Zambra Pocket Barometer 15205 Performance Chart

An attractive scarce gilt brass aneroid pocket barometer altimeter and compass compendium by Negretti & Zambra no. 15205 c1935


Pocket barometer having 1¾” silvered and die struck dial, the outer bezel set altitude scale calibrated in feet with a range from 0 – 10,000ft divided down to 100ft, inner barometric scale calibrated in inches of mercury with a range from 21” – 31” divided down to 1/20th. The upper part with standard meteorological terms and marked “Compensated,” the lower signed “Negretti & Zambra, London” and serial no. “15205.” Blued steel pointer, bevelled glass.

The high finished movement of conventional Vidie design driven from a single 1” nickel alloy capsule tensioned on a C spring, the bridge dated “11/35.” All contained within a ribbed drum form gilt brass case. Calibration port to verso. Pendant and pinned bow.

The double pivoted compass having frosted gilt stepped card, illuminated cardinal and intercardinal points and star form decorated centre. Flat blued steel needle marked “N” and “S” in gold.

Presented in its original burgundy leather over timber, green silk and velvet lined case, the base with compass viewing aperture, snap closure on a button release.

Condition: The subject of a full service, conservation, and calibration under laboratory conditions, see performance chart from dynamic test. The movement working well with maximum error of 0.3” at 23” and below.

The barometer dial with slight signs of ageing, otherwise crisp and clean. The compass easily finding north. The outer brass case retaining a proportion of original gilt finish, the leather travel case crisp and structurally sound, good external colour and gloss, the leather replaced to immediate locality of release button, the fabric interior verdant and bright.

Comments: A very hard to find compendium, especially in this crisp condition. Attractive and functional, complete and fully working, this makes a perfect collector’s piece or for occasional use.

Dimensions: 2¼" diameter x 1⅛" deep

Stock No: CP1593

Price: SOLD