In a linear scale type displacement measuring instrument including: a case fixed to one of relatively movable members; a main scale; a carriage; index scales and a detector; the carriage and the other of the relatively movable members are connected to each other through a connecting mechanism, one end...http://www.google.fr/patents/US4603480?utm_source=gb-gplus-shareBrevet US4603480 - Linear scale type displacement measuring instrument
Linear scale type displacement measuring instrument
