
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
TRAILER “COMPROMISE”
As the vacation period approaches, many auto tourists (especially families) begin to think about where and how they will rest on the road: living in a campground or on wheels, equipping...
JAPANESE MIDGET
The Washington naval agreement of 1922 was a significant barrier to growing the race for naval armaments, which began during the First world war. Under this agreement the Japanese fleet...