Accession No

3023

Brief Description

wind corrector, by Forster Groom and Company Ltd., English 1/2 20th Century

Origin

England; London; 15 Charing Cross

Maker

Forster Groom and Company Ltd.

Class

mathematics; military

Earliest Date

1900

Latest Date

1950

Inscription Date

Material

plastic (celluloid); paper (card)

Dimensions

length 153mm; width 44mm

Special Collection

Steward collection

Provenance

Collection purchased from member of the Steward family, 1974.

Inscription

‘Forster Groom & Co., Ltd. (Military Publishers), 15 Charing Cross, London, S.W.’ (bottom front)

Description Notes

Rectangular card plate with circular celluloid protractor originally attached to front by metal pin (missing). Front carries grid for calculating line of fire and directions for use. Protractor divided 0 - [360] numbered by 10 subdivided to 1, also marked with 8 points of the compass. Reverse carries range tables, fuse corrections and angle of sight rules for an 18 pounder gun. Compiled from official range tables by Major E.R. Hatfield, D.S.O., R.F.A. Some manuscript addition on front.

Condition fair (protractor detached from back); complete

References

Events