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Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU330Linear
N4094
4344
1
Merchant'sKeuffel & EsserUSA
896056
Engine divided celluloid laminated mahogany
"10"
1954
C4

Notes: Unbreakable indicator (narrower with plastic window). Wooden frame replaced with plastic and conversion table changed to new K&E version. Note: model number on slide rule is <4094>.

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