The tube bottom instrument for the pipe arrangement height measurement in sewage work constructing

摘要

(57) Abstract Topic In order to measure, measurement assistant enters into the manholeAs there is a necessity, in one measurement as for minimum of 3 names it becomes necessary, the long timeHKRPT It cancels ru in between measurement. Solutions Of measurement stick itself 1 of angular flexible pipe condition bottom rearOn the outer part surface 2a according to axial direction the top opening of the circular flexible pipe the coverThe tegmentum outside doing, adhering tube 4 with body, 3 to make one body, outside the saidInside bypass 4, on the bottom of the axial bar 6 which suitable size is longer than the said tube 4 YamagataSewage tube interposition bar 7 of the suitable length which consists of the material the edge of apex 8 the lower partAdhering to perpendicular direction, the axial bar 6 section of the axis 9 which it makes one bodyAs revolution the playing Inlaying it does unrestrictedly, in measurement stick itself 1 outside the frontOn edge strip 2, the condition where the top edge of the axial bar 6 section touches to the underside of cover board 3With voice, the dimension division 1 which designates the apex 8 of sewage tube interposition bar 7 as 0 dots0 carving/moment facilities was displayed in axial direction