K&E 4058 --- 10" Box Wood Mannheim Slide Rule with Original Box
From the collection of Clark McCoy
This version of the 4058 was produced from 1915 through about 1930. The cursor is made of celluloid. The box is a simple cardboard box with printing directly on it. Notice that the model number is wedged in between the B and C marks on the left end on the rule. The conversion charts on the rear have no title or company name with them as with later 4058s. The L scale counts from the right increasing to the left.
Original box and slide rule
Back of slide
Left end view