Slide Rule

1994/001

‘The Fuller Calculator’: a long-scale cylindrical slide rule (1945)

SKU: 1994/001 Categories: ,

Description

‘The Fuller Calculator’ (1945): a long-scale cylindrical slide rule which consists of a cylinder which can be rotated and moved up and down around an inner cylinder held by a handle and is provided with three brass pointers or indexes. The logarithmic scale is arranged spirally on the outer cylinder and is the equivalent of a straight scale of 500 inches making it possible to obtain four figure accuracy in a result. Besides the operations of multiplication and division, results requiring reciprocals, powers, roots or logarithms of numbers can be obtained. The wooden case also acts as a support when the instrument is in use.

The ‘Fuller Calculator’ was patented by George Fuller MICE in 1878.

Additional information

Acquisition Number

1994/001

Item Type

Short Description

Slide rule: "The Fuller Calculator'

Manufactured by

Date of Manufacture

1945

Sub-items

Wooden box and brass stand

Supporting Items

Book: The Slide Rule by CN Pickworth (see Reference Items).

Makers Number

4611 45

Marks

Stamped "4611/45"

Dimensions (mm)

436 (L) 78 (dia of outer sliding cylindrical sleeve)

Donor

Date Donated

1994

Materials

Wood, plastic laminate and brass

Condition

Good

Display Location