Accession No

1444

Brief Description

five standard resistors in a single case, 1 to 5 ohms, by Warden, Muirhead and Clark, English, December 1875

Origin

England; London; Westminster

Maker

Warden, Muirhead and Clark

Class

electrical

Earliest Date

1875

Latest Date

1875

Inscription Date

Material

plastic (ebonite); metal (copper, brass)

Dimensions

maximum diameter 280mm; height 163mm

Special Collection

Cavendish Collection?

Provenance

Transferred from the Cavendish Laboratory, University of Cambridge.

Inscription

on top: “Warden Muirhead and Clark / Westminster”
on one block (added): “E 106”

Description Notes

Circular ebonite top; five pairs of parallel copper rod connnectors passing through top are bent (twice) to vertical, each pair held together by two ebonite blocks; five coils wound on single brass bobbin fixed to second circular ebonite plate; enclosed in cylindrical brass case with hole through centre.

References

Events