Details
A farmer's slide-rule,
The cattle gauge & key to the weighing machine arranged by J Ewart Newcastle on Tyne, with ivory slide in brass-tipped boxwood stock, by J.Tree. Maker Charlotte St. Blackfrs. Rd. London -- 9 in. (22.5 cm.) long approx.
The cattle gauge & key to the weighing machine arranged by J Ewart Newcastle on Tyne, with ivory slide in brass-tipped boxwood stock, by J.Tree. Maker Charlotte St. Blackfrs. Rd. London -- 9 in. (22.5 cm.) long approx.