| 摘要 |
PURPOSE:To simply measure the line length of a cable from a connection part to each load by applying a scale to the wiring diagram of a unit cable expressed on a construction drawing. CONSTITUTION:A base point 5 is determined and indicated at a specific position on a plate surface in a substantially transparent plate-shaped scale body 1, each kind of load 6 is indicated in the circumferential direction with the base point 5 as the center, and at the same time a scale indicating the line length obtained by adding the rising/down length according to a certain load, surplus length, etc., to an actual length in the radial direction is provided according to a specific scaling rate in the radial direction for each load from the base point 5. |
