It is convenient to create a temporary memo — whether it is preparing the card for your file, or just notes about the latest Affairs in the coming days, or envelopes with letters awaiting answer: they are placed between the turns of the springs (preferably of large diameter). Ensure that the spring does not ride, attach the ends of tin or cardboard cheeks.
Recommend to read
WITH BUILT-IN GEARBOX
I was confirmed in my decision to build a walk-behind tractor after I read the article “Vyatich” (“M-K” No. 7, 1981). However, the design proposed by the magazine, despite all its...
“ETERNAL” CUFF
The weak point of any piston pump — automobile, motorcycle or Bicycle, as is well known, piston, or rather, leather cuff, and the main fault is a loose fit it to the cylinder walls. The...