| 摘要 |
PURPOSE:To mount easily on an angle measuring plane or on the cubic surface to digitize an angle by disposing a rotatable body to a base freely rotatively and by digitizing an extent of a rotation of the rotatable body to detect an angle. CONSTITUTION:A rotatable body 8 is supported freely rotatably around an axis as a center, to a base 2 capable of mounting on the measuring surface. An index 26 has an index indicating a center of a rotation of the rotatable body 8 and reflects the measured surface just under the index. An extent of a rotation of the rotatable body 8 is digitized by an encoder plate 14, a signal from the encoder plate 14 is detected electrically by a reader to be displayed on an displaying part 46. |
