measuring rulers; slide calipers; micrometers; surveyors' levels; dynamometers; connections, electric; electronic devices for measuring electric current; protective helmets; plumb bobs; electric door bells; bubble levels; analog multimeters; electric sockets; switches, electric; gloves for protection against accidents; welding masks; safety goggles; safety traffic cones; nets for protection against accidents; vehicle breakdown warning triangles; electrical voltage tester pens; reflective safe...