Details and Image
|Date||Scale Length||Area of Use
|Linear||K & E /4053-3||Keuffel & Esser||USA||Celluloid over wood||early 1900's||25 cm||Engineering
Notes: "The Keuffel & Esser 4053 “Polyphase” slide rule has the scale set of a Rietz, with A, B | CI, C | D scales on the front, a K scale on the lower edge, and S, L, and T scales on the back of the slide. The 4053 was very popular because it was very useful. "