Accession No
6129
Brief Description
small brass altimeter, by G:I:G: VanDermeer, 1837
Origin
Maker
G:I:G: VanDermeer
Class
surveying; meteorology
Earliest Date
1837
Latest Date
1837
Inscription Date
Material
metal (brass); wood
Dimensions
Length 160mm; width 52mm; height 230mm
Special Collection
Provenance
Purchased from Bonhams, 101 New Bond Street, Knightsbridge, London, on or before 12/06/2007.
Inscription
“metres
0.05 : A :: 10.110 : B
G:I:G: VanDermeer
inv: & Fec: 1837” (top left of front)
Description Notes
Scale marked on front reads upwards and clockwise from 3 to 18, in 1/2 divisions whose size decreases progressively; scale on reverse reads upwards and anticlockwise from 10 to 60, in 1/10 divisions whose size also decreases progressively.
Wooden base, painted black.
Engraving on front: floral designs, and crest with three cockerals at bottom left.
Condition: good; base is chipped on one side and is scratched.
References
Events
Description
An altimeter is an instrument used to measure the altitude of an object above a fixed level. In most aircraft, you will find a pressure altimeter, which will measure the atmospheric pressure from a static port outside the aircraft.
FM:46598
Images (Click to view full size):
