Calculagraph, Electric; Western Electric; 1930-1940; ZLB.3745
Calculagraph, ElectricAbout this object
This is a 20 volt, Western Electric, Electric Calculagraph, used in telephony for timing toll calls. This particular model is a NO.33 17774 20V 50 CY. It came with a wooden transport carrying case. Electric calculagraphs first made an appearance in the United States in the 1930s.Maker
inorganic, processed material, metal, alloy, steel
inorganic, processed material, metal, copper
inorganic, processed material, metal,
inorganic, processed material, synthetic, plastic
organic, processed material, vegetal, fibre, cotton
Embossed on plate on front 'PATENTS 1534755 582651 PATENTS PENDING KS7769L6 TRADE MARK 95597 NO.33 - 17774 20.V. 50 CY'
'CALCULAGRAPH MADE IN U.S.A'.
h 210 mm x w 85 mm x d 180 mmSubject and Association Keywords
This object is from
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