3x old 60cm long Chesterman Contraction Rules - No. 1956D, 1961D, 1962D
Each rule is marked 'Chesterman, Sheffield'.
Contractions: 1/30, 1/32, 1/40, 1/48, 1/64, 1/77, 1/90, 1/96, 1/120,
Condition: some black staining/pitting, please see photos for condition.
