Features 1、And the ruler not only can be widely applicated in equipment installation, but also suitable for construction of industrial engineering and building engineering. 2、Performing absolute and relative measurement to the measured object, the measuring tool is with resetting function. 3、Durable with quality chip, this digital ruler is with high-strength aluminum alloy body. 4、Entitled with three-minute unresponsive automatic shutdown function, such a ruler can save energy. 5、Supporting a high-definition liquid crystal display with backlight function, such digital display module can be used normally in low light and darkness. Specification Item Type: Digital ruler Material: Aluminum alloy Length: Approx. 225mm / 8.9 in Battery: 2 x AAA batteries (not included) Range: 4 x 90° Resolution: 0.05° Accuracy: ±0.2° Working Environment: 0-40 ° C, humidity ≤ 80% Storage Temperature: -20--60 ° C Role: Mainly applicated in equipment installation, construction of industrial engineering and building engineering. Package List 1 x Digital Display Level Ruler 1 x English Instruction Manual