Accession No

3025

Brief Description

‘the machine gunners’ sliding graph’, by United Metal Engraving Co, 1/2 20th Century

Origin

40 High Bridge; Newcastle-upon-Tyne; England

Maker

United Metal Engraving Co. Ltd.

Class

mathematics; military

Earliest Date

1900

Latest Date

1950

Inscription Date

Material

plastic (two types of celluloid); paper (card and one other); metal (brass)

Dimensions

length 278mm; width 117mm

Special Collection

Steward collection

Provenance

Collection purchased from member of the Steward family, 1974.

Inscription

‘UNITED METAL ENGRAVING CO. LD.
40, High Bridge,
Newcastle-on-Tyne.’ (bottom left of front)

Description Notes

Rectangular white celluloid sheet with 2 pieces of transparent celluloid pivoted to one end.
Obverse: range scales for various distances and heights above and below gun level. Brief instructions in top left hand corner. Trapezoid piece of celluloid set over scale showing parabolas for ‘highest shot’, ‘centre shot’, ‘lowest shot’ and ‘danger line’. Also ‘1/10000 yard scale’ divided [0] - [2800] numbered by 500 subdivided to 25.
Reverse: Table for weather corrections for different distances. Pressure and angle marked on base, temperature and wind marked on rotatable transparent celluloid rectangle. Also various conversion factors listed.
Folded paper instructions. Cardboard slip-case covered in paper.

Complete

References

Events