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History of Science Museum

Circumferentor, by A. Abraham, Liverpool, 1818-1850

Inventory Number 87021


Acknowledgement: © History of Science Museum, University of Oxford, inv.87021

Item type
Object
Provenance
Billmeir Collection
Primary inscriptions
"A. Abraham Liverpool" in compass bowl
Inventory No
87021
Accession Number
1964-296

Description

Large central compass (needle loose) reading against verniers; two bubble levels, one broken and bent; two folding sights (alternating slit and thread, with pinhole and cross wire); compass lid used with (missing) plumb line for altitudes, reading against degree scale and "Diff of Hypo & Base"; socket for tripod detached.