Gunners Brass Calipers by Wakins London

Gunners Brass Calipers by Wakins London c 1830 – 1840. In super condition and of high quality construction with steel inserted tips, the arms marked with bore size and gummers calculations. Maker marked Watins Charing Crofs London this set is one of the largest I have seen and have a good age patina, overall length 57cm