Brass framed double reflecting circle with case.

Double reflecting circle made by A. Hurlimann, successor to Lorieux, Paris, France, about 1900. Circular anodized brass frame and index arm, a hinged wooden handle. Signed on the brass limb: Lorieux, A. Hurlimann, succ.r a Paris (172). Inlaid silver scale from -5° to 195° every 30'. Silver vernier to 1', zero at the right. The index arm carries the index glass, the horizon glass is fixed on the frame. The tangent screw is on the front of the index arm; the clamping screw is on the back. Seven detached index and horizon shades (six green, one orange). Two index glasses, adjustment on both and on the two horizon glasses by square-headed screws and a detached key (missing) and by capstan screws. Magnifier (single lens) on a 65 mm swivelling arm. Telescope (100 mm), erect image, fixed in its bracket; perpendicular adjustment by rising-piece and a milled knob. Two shaded eyepieces (both green). A screwdriver; a magnifying glass; an adjusting key; an adjusting pin. A square fitted mahogany box (lid cracked) containing in the lid a trade label for A. Hurlimann, Ponthus and Therode, 6, rue Victor Considerant, Paris, and printed instructions in French for cleaning the scale. Painted on the front of the box: H.O [broad anchor] 202.

Details

Category:
Astronomy
Object Number:
1929-443
Materials:
brass, glass and silver
type:
reflecting circle and instrument case
credit:
British Admiralty (Hydrographic Department)

Parts

Brass framed double reflecting circle.

Brass framed double reflecting circle.

10 inch reflecting circle, by Hurlimann, instrument engraved "Lorieux A. Hurlimann, succrs, a Paris (172)"; accessories:- 7 dark glasses; 2 dark glasses for telescope; 1 pocket magnifier; 1 small box-key; 1 tommey; 1 screwdriver; 2 metal L-pieces

Object Number:
1929-443/1
type:
reflecting circle
Image ©
The Board of Trustees of the Science Museum
Case for double reflecting circle.

Case for double reflecting circle.

Mahogany case & accesories with key, 13"x13"x5" (lid and base of case cracked), for 10 inch reflecting circle, by Hurlimann, instrument engraved "Lorieux A. Hurlimann, succrs, a Paris (172)"; accessories:- 7 dark glasses; 2 dark glasses for telescope; 1 pocket magnifier; 1 small box-key; 1 tommey; 1 screwdriver; 2 metal L-pieces

Materials:
mahogany (wood) , glass and metal (unknown)
Object Number:
1929-443/2
type:
instrument case
Image ©
The Board of Trustees of the Science Museum