Accession No

2903

Brief Description

sympiesometer, by J. Somalvico and Company, English, 1850 (c)

Origin

England; London

Maker

J. Somalvico and Company

Class

meteorology

Earliest Date

1850

Latest Date

1850

Inscription Date

Material

wood (mahogany); glass; metal (silver, mercury)

Dimensions

height 630mm; breadth 113mm; depth 40mm

Special Collection

Provenance

Purchased from Peter Delehar, London, England, 10/1982.

Inscription

‘J. SOMALVICO & CO
Opticians
London
Improved Sympiesometer.’

Description Notes

sympiesometer, Somalvico & Co, 1850 (c).

Carved mahogany case; glazed panel to silvered scale; mercury thermometer on left with scale divided 0-110 (oF) by 10 to 0.5. Glass pressure tube on right with scale divided 110-30 by 10 to 0.5 with silvered sliding scale, moved by knurled screw outside case, graduated 28-31 by 1 to 1/40 and marked FAIR/Change/RAIN. Silvered dial at base divided 28-31 to 1. Fluid is light oil.

References

Events