Accession No

3253

Brief Description

rheostat, 1900-1950 (c)

Origin

Maker

Class

electrical

Earliest Date

1900

Latest Date

1950

Inscription Date

Material

wood; plastic (ebonite); ivory; metal

Dimensions

height 177mm; breadth 113mm; depth 95mm

Special Collection

Provenance

Transferred from Institute of Astronomy, University of Cambridge, Cambridge, England, 1985. Cambridge University Observatories.

Inscription

Description Notes

Rectangular wooden base; three terminals; vertical resistance coil; contact wheel travels around coil, controlled by ebonite knob with pointer at top; circular ivory dial at top, scale 0 to 100 divisions; pointer at top; circular ivory dial at top, scale 0 to 100 divisions; linear scale on vertical bar, 0 to 100 divisions. No inscriptions.

Condition: good; complete.

References

Events