Multi-function laser level: directional machine, laser jet, ruler and tape measure (8 feet) 4 in 1, designed for every situation where a straight line or measurement is needed. 3 bridging levels: the laser level with a level, a block and a 45 bladder to determine the horizontal and vertical level. For more accurate results. Comes with 3 x AG 13 button cell batteries to ensure you keep going with maximum convenience. COMPATIBILITY - Ideal for hanging pictures along a stairwell, hanging mirrors, installing curtain rods and other household items - The laser part can be separated from the set and used on its own - For indoor use only (ideal for father's gift). Easy to use: it is equipped with a selection button on the front. It controls the switching of vertical laser line, horizontal laser line and cross laser line mode, and is suitable for different modes of use, more precise and more stable. Note: 1. please press the key button when you remove the tape measure, it would make the tape measure better and easier to use. 2.Please loosen the wrench knob to lock the spool when the tape measure has been stretched to your desired length. 3 Line Modes Designed for any situation where a straight line or measurements are needed. Level bubbles A three-position leveling bubble can provide more accurate results. Tape Measure The tape measure is 8 feet long and includes imperial and metric measurements with graduations down to 1/32 and 1mm