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Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU287Linear
4041
4658
1
Mannheim AdjustableKeuffel & EsserUSA
7
Engine divided celluloid laminated mahogany
"10"
1904
C6

Notes: Frame lengthened from 26 cm to 27 cm. This was done to allow the indicator cursor's line to overlay ends of scale without extending of the end. Eliminated need for two cursor line indicator. Conversion table label shortened to fit between two end screws.

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