3x 30cm long Chesterman Contraction Rules - No. 315D, 958D
Two of the rules are marked 'Chesterman, Sheffield', the third is a more modern Rabone Chesterman contraction rule.
Contractions: 1/30, 1/60, 1/70, 1/96, 1/100, 1/120,
Condition: varying black staining/pitting, please see photos for condition.
