Keuffel & Esser 4185C Magnifier
(1935-1953)
slide rule
Click to view 300 dpi image.
ManufacturerKeuffel & Esser
Model4185C
Serial No.
Length
Width
Height
MaterialsMetal and Glass
Accessories
NotesThis magnifier fits K+E 4080 series rules.
I got this on Ebay as the cursor on a Dietzgen student rule! Here's the seller's auction photo.
Tag No.KE-4185C
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