Accession No

3954

Brief Description

navigational depth sounder gauge / rule, in boxwood, by Kelvin, Bottomley and Baird Ltd., Scottish, c. 1915

Origin

Scotland; Glasgow

Maker

Kelvin, Bottomley and Baird Ltd.

Class

navigation

Earliest Date

1913

Latest Date

1947

Inscription Date

Material

wood (boxwood); metal (brass)

Dimensions

length 333mm; breadth 26mm; thickness 16mm

Special Collection

Provenance

Purchased.

Inscription

‘LORD KELVIN’S PATENT’
‘1907’
‘KELVIN BOTTOMLEY & BAIRD LTD GLASGOW’

Description Notes

Navigational depth sounder gauge / rule, in boxwood, by Kelvin, Bottomley & Baird, Scottish, c. 1915.

Boxwood rule with upright, secured by brass pins, for retaining the glass tube of a Kelvin sounder. Brass end-stop secured by brass pins. Non-linear scale of 5-100 ‘FATHOMS’. Table of atmospheric pressure corrections on reverse.

Condition: good; complete.

References

Events