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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Linear
Dubilier Capacity Electronic poly-slide (2)
John Davis & Son (Derby) Ltd.
Great Britain
Celluoid on Wood
1928
25 cm
Electrical
Notes:
"Dublilier Capacity Rule designed for electrical R, L, C frequency calculations, designed by Philip R. Coursey, note the 2 slides"
Image 1
Image 2
Image 3
