SCISSORS WITH RULER

SHEAR LINEThey say: “measure twice — cut once”, but if one of the shear blades to cause a spark or graviroval marker centimeter scale, as shown in the figure, from a preliminary marking in many cases will be abandoned. It is sufficient initially to dissolve the scissors so that the point of intersection of the blades were “0” and then to control the magnitude of the slit displacement of this point relative to the scale.
 
A. VASILIEV, Krasnoyarsk

Recommend to read

  • EPOXY “DARNING”EPOXY “DARNING”
    A crack in a car battery can be repaired with epoxy putty and the battery still will serve. The technology is quite simple. Cracks on the spot doing the groove, cleaned and degreased it...
  • PLOWS, CARRIES AND EVEN SAWINGPLOWS, CARRIES AND EVEN SAWING
    The need to build a mini-tractor came to me simultaneously with the acquisition in the early 80-ies of the garden plots (receiving, as they said then). Those coveted six acres it was...