Accession No

6488

Brief Description

nickel-plated surveying level, by A. Berthélemy, French, c. 1880

Origin

France; Paris

Maker

Berthélemy, A.

Class

surveying

Earliest Date

1880

Latest Date

1880

Inscription Date

Material

metal (nickel-plated brass); glass

Dimensions

740mm (width)

Special Collection

Provenance

Purchased from Bonham’s Knightsbridge, Montpelier Street, London, SW7 1HH. Lot number 104, Fine Mechanical Music and Scientific Instruments, Wednesday 3/11/2010.

Inscription

A. Berthelemy, Bte s.g.d.g. a Paris

Description Notes

Nickel-plated surveying level, by Berthélemy, French, c. 1880.

The telescope with rack and pinion focusing and dust cap to the object glass, located in twin supports with clamps holding the upper limb with bubble level and fine rack and pinion adjustment for two prisms arranged on the upper bar, the prisms and rack motion arranged to rotate for side viewing, the lower bubble with fine screw adjustment by key, the lower limb with fine screw vertical adjustment, raised on a truncated column over the horizontal plate incorporating a bubble level, fine screw adjustment and clamp, on tripod stand with three adjustable screw feet.

Condition: good (complete; though was originally listed at auction as “contained in the original fitted mahogany case with maker’s trade label”; this text was removed in a late notice)

References

Events