Artifact Details

Title

Lehmer Number Sieve, bicycle chain

Catalog Number

102622622

Type

Still image

Identifying Numbers

Other number #109 Verso pencil

Dimensions

overall: 10 in x 8 in

Description

B&W image of D.H. Lehmer's bicycle chain number sieve. The chains are on an axle which is supported by a "sawbuck" of 2x4's. The driver motor is on a shelf below the chains.

Category

Photograph
 

Related Records

102622804 Lehmer - Bicycle Chain Sieve