Accession No

2904

Brief Description

perspectograph, by Gavard, 1850 (c)

Origin

Maker

Gavard

Class

drawing

Earliest Date

1850

Latest Date

1850

Inscription Date

Material

metal (brass, steel); rope (string)

Dimensions

length 380mm; breadth 100mm; thickness 90mm

Special Collection

Provenance

Purchased from Peter Delehar, London, England, 10/1982.

Inscription

‘Gavard
Par Brevet d’Inven’

Description Notes

perspectograph, by Gavard, 1850 (c)

Two circular brass pillars joined by steel bar. One end mounted on wheels with deep ‘V’ which locate on brass rail for horizontal motion; pillar has circular and vertical motion. Window sight with cross hairs linked by strings to pulleys at top and bottom of pillar and to pencil point mounted on steel bar; raising facility on pencil. Second string to other pillar and pinhole sight. Pillar mounted on brass wheel.

References

Events