Accession No

2605

Brief Description

spectrometer, by P. Pellin, French, 1890 (c)

Origin

Paris; France

Maker

Pellin, P.

Class

optical

Earliest Date

1890

Latest Date

1890

Inscription Date

Material

metal (oxidised brass, brass, silver)

Dimensions

length 430mm; breadth 275mm; height 402mm

Special Collection

Provenance

Purchased from Alain Brieux, Paris, France, 05/1980.

Inscription

‘Ph. Pellin Paris’

D[?]2 87 [top of tripod]

2 [side of tripod]

Description Notes

Table spectrometer, part oxidised brass. Brass collimator, adjustable slit moved by knurled screw, on draw tube. Inclination of collimator adjustable by knurled screw moving against spring. Collimator mounted on arm, pivoting about centre of stand, with clamping screw. Central circle held by brass spokes, silvered and divided 0-360 by 1˚, subdivided to 30’. Incomplete platform for prism (missing), with three levelling screws; platform rotated by brass arm, with clamp and tangent screws, and silvered vernier reading to 1’. Telescope pivots on brass arm with clamp and tangent screws and vernier reading to 1’. Focussing by rack and pinion moved by knurled screw. Screw-in eyepiece with one draw tube, cross-hairs and side aperture (for illuminating cross-hairs?). Platform screws into pillar stand with draw tube and clamp, on tripod base with 3 levelling screws.

References

Events