1、Combined with a fine‑tuned tape measure and three‑level air bubbles, it can provide the best measurement results. 2、Level measuring ruler equipped with 8 feet long tape, including imperial and metric linear rulers. 3、Suitable for any situation where a straight line or accurate measurements are needed, such as measuring the position on the wall, the space between the hangers etc. 4、Multi‑function level measuring instrument has 3 line modes, different angles can be adjusted and easy to operate. 5、The product is made of ABS material, with have high accuracy, not easy to damage and durable. Item Type: Level measuring instrument Material: ABS Projection Wavelength: 650nm to 680nm Battery: 3 x LR44 (Battery Not Included) Length of Tape Measure: Approx. 8 feet/250cm Measurement Angle: horizontal measurement, right angle measurement, 45° measurement Product Size: Approx. 19 x 6.2 x 2.7 cm / 7.5 x 2.4 x 1.1 in 1 x Measuring Instrument (Battery Not Included)