公开(公告)号：US4060900A

公开(公告)日：1977-12-06

申请号：US692422

申请日：1976-06-03

Applicant: Michael Peter Greenwood

Inventor： Michael Peter Greenwood

IPC: B43L13/00 ,  G01B3/56 ,  G01B5/24

CPC classification number: G01B3/563

Abstract: An angle measuring device including two discs pivoted together at their common center for relative rotation, each disc having a slit extending from its center to its periphery and arranged so that, on relative rotation of the discs, a scale provided on the device indicates the amount of relative rotation.

Abstract translation: 一种角度测量装置，包括两个在它们的公共中心枢转在一起用于相对旋转的盘，每个盘具有从其中心延伸到其周边的狭缝，并且被布置成使得在盘的相对旋转时，设置在装置上的刻度指示量 的相对旋转。