2results about How to "Avoid unmeasured" patented technology

The utility model discloses a portable measure ruler, including first ruler body and second ruler body. The portable measure ruler, the outside of first ruler body is provided with the second ruler body of sliding cover, and the inner chamber for first ruler body sliding is passed in on the second ruler body and is passed in and is established, and the front end of first ruler body is equipped with first measuring claw, and the front end of second ruler body is equipped with second measuring claw, and the front surface of first ruler body is equipped with first scale line, and the back of second ruler body is equipped with observation slot with first scale line, and the below of observation slot is equipped with second scale line, and first ruler body and second ruler body mutually positive direction plug -in, and first measuring claw and second measuring claw close to each other, thereby with the zero scale of first scale line, and first ruler body and second ruler body mutually reverse plug -in, and first measuring claw and second measuring claw are far from each other, thereby with the reference scale line measurement of second scale line, and the size extension of measurement is carried out, thereby avoided the problem that smaller size can not be measured.

The utility model discloses a universal bevel protractor for prefabrication and assembly of electromechanical pipelines, belongs to the technical field of universal bevel protractors, and solves the problems of complicated operation and low measurement efficiency caused by the fact that the universal bevel protractor needs to be reassembled for workpieces with different angle ranges in the prior art. The angle measuring device comprises an angle measuring disc with scales, a straight fixed ruler fixedly arranged on the angle measuring disc, and a straight movable ruler which is rotatably arranged on the angle measuring disc and is matched with the straight fixed ruler to measure the angle of a workpiece to be measured. The angle measuring device is used for measuring the angle of the workpiece in the electromechanical pipeline prefabrication assembly.