Name	Keuffel & Esser < 4053 - 3F > Poly Keuffel & Esser 4053- 2S Mannheim Adjustable dated 1913 (other example) Magnifier
Front Scales	10inch / A = B CI C = D ] K
Back Scales	= S L T =
Type of Rule	slide rule
Material	Engine divided celluloid laminated mahogany
Dimension (mm)
Area of Use	generic
Origin of Rule	Ed Chamberlain
Match Number	4757
Comment
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