Accession No

2745

Brief Description

Burnier’s compass / clinometer, by Balbreck, French, 1875 (c)

Origin

France; Paris; 81 Boulevard Montparnasse

Maker

Balbreck

Class

surveying

Earliest Date

1875

Latest Date

1875

Inscription Date

Material

metal (brass, oxidized brass); glass; wood; rope (thread); cloth (velvet)

Dimensions

length 77mm; height 115mm; breadth 50mm

Special Collection

Provenance

Purchased from Peter Delehar, London, England, 04/1981.

Inscription

‘Balbreck Ainé
81, Bvart Mont-Parnasse
à Paris.’ (on main body)

Description Notes

Brass pear shaped box. Folding slit and window sights with cross wire which folds down into brass slot. Cylindrical lens in one end, with window above, for reading compass and clinometer readings. Compass ring graduated 0 - 360 numbered by 10 divided to 1. Clinometer ring graduated 0 - 90 - 0 - 90 -0 numbered by 10 divided to 1. Sliding brass clamp for circles when not in use. Push stop for fixing angle when in use. Mounted on pivoted socket. Fitted wooden box lined with blue velvet with brass hinges and hook fasteners.

Condition good; complete

References

Events