Accession No

2424

Brief Description

plug type Wheatstone Bridge, Post Office pattern, by R. W. Paul, English, 1901

Origin

England; London

Maker

Paul, Robert W.

Class

electrical

Earliest Date

1901

Latest Date

1901

Inscription Date

Material

Wood; Plastic (ebonite); metal (brass)

Dimensions

length 229mm; breadth 121mm; height 98mm

Special Collection

Provenance

Transferred from Department of Physical Chemistry, University of Cambridge, Cambridge, England, 1978.

Inscription

“R.W.Paul. LONDON. No. 487. M. 1901. / PLATINOID. B.T. OHMS. CORRECT AT AT 15.5 CENT.” (on top)
“II / 487” (on front)
“PCL 6” (on front, added)
Also arrows on front of box, top plate, and each plug

Description Notes

Plug type Wheatstone Bridge, Post Office pattern, made by R.W. Paul, 1901. Rectangular wooden box with ebonite top; four brass terminals; tapping key; two spring loaded terminals (for holding resistor?); brass blocks with thirty plug receptors; ten brass and ebonite plugs; ten larger coils on wooden bobbins, others without formers, fastened to underside of top plate.

References

Events