used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450 used scherr-tumico 24 erect image horizontal beam optical comparator 20-2450