Accession No

6796

Brief Description

direct current voltmeter, type B.M.S, which belonged to Francis Leslie Freeland (1905-1995) who worked at Elliott Brothers during the Second World War in a reserved occupation, by Air Ministry, English, 1940

Origin

England

Maker

Air Ministry

Class

military; electrical

Earliest Date

1940

Latest Date

1940

Inscription Date

Material

glass; metal

Dimensions

100mm (width) 120mm (depth0 40mm (height)

Special Collection

Provenance

Donated by a private individual on 05/07/2023

Inscription

[plaque on front]
Direct Current VOLTMETER TYPE B.M.S

[Dial face]
D.C.
F.G.x2

VOLTS

R={30V=11440^
3v=1144^

1940
G

[on reverse]
MADE IN ENGLAND
A.M REF No 5A/878

Description Notes

Direct current voltmeter type B.M.S, by Air Ministry, English, 1940

Black metal case with ovoid plaque that reads "Direct Current VOLTMETER TYPE B.M.S". Arched glass window to a white dial, that reads "VOLTS" and has a needle pointing to the middle. The dial has a scale on the bottom that goes from 3 either side, to 0 in the middle. The scale on top of the dial is from 30-0.

There are two knobs at the top of the voltmeter, with the numbers 3 and 30 next to them, and one stem at the bottom.

There is mild rusting and corrosion all over the metal.

came with a booklet "History of the Thermometer" by Negretti & Zambra

References

Events