DescriptionObject is a slide rule where the scales are labeled with letters K A B S T CI D L. on the front, and DF CF CIF C D on the back.
ManufacturerKeuffel & Esser Co.
|Other number||103103||Etchd into end of slide, and bottom rail|
|Other number||L08||Gummed label on slide|
Dimensionsoverall: 2 in x 22 1/4 in x 1/2 in
|102730477||Slide rule case|