20. Sliding Box Camera, 1850s
Same design as previous camera for plates 120 x 120 mm, fitted with a f4 doublet Petzval-type portrait lens of 150 mm focal length, signed 'A Ross, LONDON, 3395'. The single dark slide has an inner removable frame for a slightly smaller photographic plate (110 x 85 mm).
Length 300 mm, width 185 mm, height 185 mm.
Inventory no. 73,281.