Confident fill the tank with a narrow neck to the desired level (for example, an automotive canister), if you equip the funnel with a special gauge. For its production will need a wire needle with a diameter of 1 mm, cork or foam float and a tin strip into the guide hole.
Recommend to read
RELIABLE ASSISTANT TILLERS
Continue the story of machines and mechanisms, built by V. A. VERBELEN — Amateur designer from the village of Zelenchukskaya, Karachayevo-Cherkess Republic. In the publication...
ACOUSTIC PROBE
The magazine "Amaterske Radio" (Czechoslovakia) proposed scheme is a simple audio probe to detect logic levels; low (logic 0) and high (logical 1). The device consists of a bitonal...
