Accession No

2431

Brief Description

rotary switch and slide-wire Kohlrausch Bridge, range 0.01 to 50 000 ohms, by W. G. Pye and Company, Dec 1920

Origin

England; Cambridge

Maker

W. G. Pye and Company

Class

electrical

Earliest Date

1915

Latest Date

1925

Inscription Date

Material

wood; plastic (ebonite, ivorine); metal

Dimensions

length 595mm; breadth 175mm; height 135mm

Special Collection

Provenance

Transferred, 1978.

Inscription

“KOHLRAUSCH BRIDGE / W.G. PYE & CO. CAMBRIDGE ENGLAND / No. 6036” (on top)
“B. 19” (on top, added)
“5 APR 1954” (on label on top, added)

Description Notes

Rotary switch and slide-wire Kohlrausch Bridge; range 0.01 to 50 000 ohms, made by W.G.Pye & Co., dec.1920; Rectangular box with ebonite top; three pairs of terminals, for battery, unknown resistance, and detector; two rotary switches with ebonite knobs and metal pointers; induction coil; slide-wire with non-linear scale, 0 to 10 (reading directly in ohms) on ivorine plate; lockable slider moves along brass rod. Two insulated wires with lugs.

References

Events