Accession No

4453

Brief Description

Otis King’s Patent Calculator, cylindrical slide rule, Model K, by Carbic Ltd., mid-20th Century

Origin

England

Maker

Carbic Ltd.

Class

calculating

Earliest Date

1935

Latest Date

1965

Inscription Date

Material

metal (white metal); paper (card and one other)

Dimensions

box length 180mm; breadth 42mm; thickness 41mm

Special Collection

Provenance

Donated.

Inscription

‘OTIS KING’S
Model K
Patent Calculator’ (box)
‘Made in
England. AND G1080’ (instrument)

Description Notes

Otis King’s Patent Calculator, cylindrical pocket slide rule with helical scales, Model K, by Carbic Ltd, mid 20th century.

White metal cylindrical handle surmounted by cylinder with helical scale on varnished paper. Cylindrical draw tube with similar scale and black-painted brass cursor with indexes at top and bottom. Cardboard box.

Condition good; complete.

References

Events