“DIMENSIONLESS” ROD

If in a ballpoint pen out of toothpaste, and long rods at hand was not, take the short splice and its extension from the part used stem, cut off from the writing site. To the working rod wrote flawlessly, its tube should be communicated with the atmosphere. Therefore, carefully wash the extension after removing it the bulb.
 
N. RYZHOV, Ust-Kamenogorsk

Recommend to read

  • TAP CORKSCREWTAP CORKSCREW
    To remove from blind hole a pin in it, pre-cut the threads, and then using a long bolt with a grommet pull out. This operation can be accelerated by assigning the role of "spin" to the...
  • SAUNA FOR BEESSAUNA FOR BEES
    Almost twenty years of experience in the design obsut Chernihiv circle of agricultural modeling. Over the years the students under the guidance of their mentors have designed and built...