Precision Recording Barometer / Barograph Negretti & Zambra, London c.1950 (1 of 6)
Precision Recording Barometer / Barograph Negretti & Zambra, London c.1950 (2 of 6)
Precision Recording Barometer / Barograph Negretti & Zambra, London c.1950 (3 of 6)
Precision Recording Barometer / Barograph Negretti & Zambra, London c.1950 (4 of 6)
Precision Recording Barometer / Barograph Negretti & Zambra, London c.1950 (5 of 6)
Precision Recording Barometer / Barograph Negretti & Zambra, London c.1950 (6 of 6)
Richard Twort
Richard Twort is located in Weston-super-Mare, UK

Precision Recording Barometer / Barograph Negretti & Zambra, London c.1950

REF: LA122764
£4750
€5334
$6486
Description
An exceptionally rare barograph by Negretti & Zambra. This instrument has four capsule stacks arranged as two balanced pairs and their deflections are transmitted to the main lever through flexing strips therefore avoiding hysteresis (friction errors) & loss of motion. A large open scale, the pen travels 5” for 3” of mercury. Set into a light oak case with beveled glass & chart These instruments were manufactured in very limited numbers for professional use & very rarely come on the market.

declaration

Richard Twort has clarified that the Precision Recording Barometer / Barograph Negretti & Zambra, London c.1950 (LA122764) is genuinely of the period declared with the date/period of manufacture being c.1950

additional info

Material:
Oak
Origin:
Date of Manufacture:
c.1950

delivery

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location

This Precision Recording Barometer / Barograph Negretti & Zambra, London c.1950 is located in Weston-super-Mare, UK

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