ID:
2115
Maker's Name:
J. Hicks, 8, Hatton Garden, London
Where made:
England
c. 1900?
Dimensions:
10 × 7 × 2 cm
The prism allows the scale (reverse printed) on the card to be read at the same time as a sight is taken using the front sight. Both fold down for transport. Folding down the front sight also locks the card to avoid damage to the pivot and jewel.
