Tank Sights manufactured by W. Ottway & Co Ltd, Ealing London
Stamped with date 1938 – model No. 68
Used condition, both lens have cracks, but you can still see cross-hairs through right-hand lens.
Dimensions: overall width including adjusting knob 7 inches; height 6.5 inches; depth 7 inches.
Great look, makes a superb paperweight or conversation piece for desk or coffee table.