
To measure the thickness or diameter of small fasteners do not have to have a caliper: rescue improvised version of conventional clothespins. It is sufficient to attach the metal plate coated with graduations as shown in the figure.
I. KORENEV, Korolev, Moscow region
Recommend to read
ADJUSTABLE POWER…
A simple power control of the load can be made from industrial phase speed controller electric BUE-ЗВР1. This device has small dimensions 50x55 mm, excluding handles and a reversible...
METAPHOR
Isn't that a stark contrast: while the fields of collective and state farms are treated today powerful "Kirov workers", the private plots of rural workers in the old plow at best plow...