| 摘要 |
PURPOSE:To enable a correct measurement by one person by fitting a line drawing tool freely movable horizontally to leveling rod with the vertical movement of leveling rod fitted to a slantly movable main body by DC motor via servo mechanism driven by a signal received from a transmitter. CONSTITUTION:A leveling rod 30 is guided in vertical direction with a guide roller 40 of the main body 20 fixed slantly movable to a stand 10 and a roller pen (figure omitted) is fitted freely rotatable on a level surface to a marker 7fitted to the bottom of a plate 31 fixed to the back part of leveling rod 30 and the leveling rod 30, the marker 7 are respectively driven by DC motor 66, 60 which is capable of regular run, reverse run and stoppage. Then, a receiver 62 receives the 1st, 2nd signal of from a transmitter (figure omitted) to drive servo 63, 64 respectively and to control motor 60, 66 with a controller 65 via a changing switch 67. |
