Archive of Collections



Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU147Linear
68-1318
4214
n/a
Log Log Duplex TrigKeuffel & EsserUSA
100120
Engine divided celluloid laminated mahogany
"10"
1968
C3

Notes: "Unbreakable indicator (plastic replaces glass window). Model number changed to new designation (i.e. 68 for slide rule, 1318 for unique model number). "

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