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Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU280Linear
N4053-3F
4129
n/a
Polyphase Mannheim AdjustableKeuffel & EsserUSA
519216
Engine divided celluloid laminated mahogany
"10"
1936
C4

Notes: "Improved glass indicator marked PATENT 2,086,502. Graduated as fine as 20"."

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