Accession No

1545

Brief Description

Set of two Standard Resistors of different design; 1 and 10 ohms; 2nd 1/2 19th C.

Origin

Maker

Class

electrical

Earliest Date

1850

Latest Date

1900

Inscription Date

Material

metal (brass, copper); organic (pitch); plastic (ebonite.

Dimensions

1545.1 length 200mm; breadth 79mm; height 225mm 1545.2 length 200mm; breadth 61mm; height 210mm

Special Collection

Cavendish Collection?

Provenance

Transferred from the Cavendish Laboratory, University of Cambridge.

Inscription

on block (1545.1; added): “1 Ohm / 325”
on block (1545.2): “10 OHMS”
on block (1545.2 ; added): “326”

Description Notes

Similar to Wh: 1542 but in Wh: 1545.1 the cylindrical brass case has no hole in the bottom, and is of constant diameter; in Wh: 1545.2 the brass case is of irregular diameter, and black sealing pitch replaces the ebonite top.

References

Events