Field investigation tool

The utility model provides an on-site investigation tool, and belongs to the technical field of measuring tools. The ruler solves the problem that an existing ruler is inconvenient to measure. Field investigation tool, the ruler comprises a ruler body, scales are arranged on the edge of the ruler body; one end of the ruler body is provided with an infrared range finder, a switch, a circuit board and a power supply. Wherein the power supply is electrically connected with the switch and the infrared range finder through the circuit board, the switch can control on-off of the infrared range finder, one end of the ruler body is further provided with a display screen, the display screen is electrically connected with the infrared range finder through the circuit board, the ruler body is furtherdetachably connected with a reflecting plate, and an included angle is formed between the infrared range finder and the ruler body. The on-site investigation tool is more convenient to measure. 本实用新型提供了一种现场勘查工具，属于测量工具技术领域。它解