Accession No

4001

Brief Description

cathetometer made for and submitted to the Physical Society's competition for apprentices, by Edgar Stearn, apprentice at Cambridge Instrument Company Ltd., England, 1958

Origin

England; Cambridge

Maker

Cambridge Instrument Company Ltd. Stearn, Edgar

Class

physics; laboratory apparatus;

Earliest Date

1958

Latest Date

1958

Inscription Date

Material

metal (brass, iron); glass

Dimensions

height 725mm; breadth 385mm; depth 400mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘Cambridge Instrument co Ltd
Cambridge.’ (telescope eyepiece)

Description Notes

The whole pillar of the cathetometer can turn on its axis and is secured by a knurled brass knob in brass collar just above the tripod foot. The pillar can be raised or lowered micrometrically through 25mm by the micrometer head at the top of the instrument and a reading may be obtained to 0.001mm; the telescope is carried in a cradle which can be clamped to position on the pillar by two knurled screws. The telescope is removable, the end eyepiece cover can be removed and the position of the objective can be slid along 100mm of the tube, and is held in position by a screw. There is a spirit level on the cradle and three levelling screws on the tripod base.

References

Events