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Details
Object number
W-227
Classification
Object name
Title
Slide Rule: Double
Creator
Description
Same construction, numbering, and specific points designated as W-144. Difference lies in materials, and use of wooden tracks inserted in the ivory to create the grooves in which the slides move.
Inscription/Sig.
"J. LONG MAKER 43 EASTCHEAP LONDON."
Period
c. 1820-60
Material
Place Of Prod.
England
Dimensions
Imperial(in)
Metric(cm)
Height
0.9
Width
32.2
Depth
5
Diameter
Circumference
Frame
Imperial(in)
Metric(cm)
Height
Width
Depth
Diameter
