To eliminate the need to carry a ruler or tape measure, apply a linear division on the comb, which is always in my pocket.
N. TURULIN, Taganrog
Recommend to read
WINDER-SORTER
The experimental winnowing machine-sorter is designed for selection work. The winnowing machine body is made of pine beams, to which the side plywood walls are attached. The beams are...
BLOW, ANOTHER BLOW — SAW IS READY!
The principle of operation of this device for cutting, or rather, cutting out of teeth on the blades for the hacksaw is simple. Its main part is a wheel with a cage, fortified it with...