Accession No

3749

Brief Description

Cora Senior model planimeter, by Coradi, Swiss, 1960-1970 (c)

Origin

Switzerland; Zürich

Maker

Coradi

Class

calculating; drawing

Earliest Date

1960

Latest Date

1970

Inscription Date

Material

metal (white metal, lead); plastic; glass; wood; cloth (velvet, cotton); stone (saphire); rubber

Dimensions

length 289mm; breadth 68mm; height 38m; case length 275mm; breadth 128mm; height 48mm

Special Collection

Provenance

Purchased from Christie’s, London, England; lot 232, 30/03/1989.

Inscription

‘G. CORADI AG
ZÜRICH’ (case)
‘CORADI’ (on front of instrument)
‘Swiss made
8967’ (on back of instrument)

Description Notes

Computer mechanism housed in green-painted metal casing with tracing arm passing through. Pole arm set in casing by metal pin in hole. Pole arm with cylindrical lead weight and scale for adjustment. Tracing arm with coddington lens and scale divided 7 - 10, [0] - 9 numbered by 1 subdivided to 0.1 with vernier set in window of computing mechanism. Measuring drum in white plastic divided 0 - [10] numbered by 1 divided to 0.1, with vernier. Separate scale to read tens. Zeroing button on side of computing mechanism. A piece of metal (purpose unknown). Paper covered fitted wooden box lined with red velvet with white metal catches and hinges. Elastic in lid for holding instructions and guarantee.

Condition good; complete

References

Events