Marking on one is Made by Brown & Sharpe mfg. co. Made in Great Britain by Bu En France, Patent July 1-79, June 3-84, Aug 23-92.

Marking on the other is Brown & Sharpe mfg. co.. Providence R.I., Pat'd in Great Britain Bu En France, SG DG , USA, Patent Aug 23, 1892, Aug 6, 1901