A glass prism by the firm of "J. Duboscq of Paris".

The cast iron tripod base holding the gilt brass rod with height adjustment to a maximum of 22".

Chips and nibbles to the glass prism.

A really beautiful object made to the highest quality.

Paris, mid 19th century.

H:37 W:19 D:19 CM

H:14.5 W:7.5 D:7.5 INCHES