(57) Abstract Topic Inclined angle being adjustment possible, measurement target onesBeing adapted to various angles, measurement of tilt oblique line the ray which enforces directlyThe spirit level is offered. Solutions Nesting 10 and cartridge base 20 and laser departureMorphism tube it has with 30 and the control circuit and rotary component 50. CylinderForma base 20 to be concatenated by nesting 10, laser emission tube 30To possess the translot 21 which is inserted, as for translot 21 cartridge base 20Stretching it has done to one side wall. In addition, inside cartridge base 20 timeRevolution component 50 and the control circuit is installed. Rotary component 50In one end is exposed in cartridge base 20 providing the knob 51 which,Already as for one end of rotary component 20, concatenating to laser emission tube 30Stretching it has done on one end aspect of cartridge base 20. Knob 51 revolutionIf it does, laser emission tube 30 can incline and can adjust angle.As for the control circuit the laser optical time which is provided inside laser emission tube 30Turning point structure 41 and power supply feature surface of 42 and cartridge base 20To possess with the control board which is exposed, rotary speed of laser light scanningIt is adjustment possible.
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