Appeared in stores digital multimeters seriously pressed the usual “switches-instrument Toolkit”. However, expensive components (the battery), and sudden circuit failures limit the possibility of using these multitesters. And in the field-conditions, they are generally unsuitable, as ranked by now outdated “respectable” turnout isometry: danger drop, break, drop solder, the difficulty in retaining “the weight” during the measurements all lead to the loss of an expensive device. Therefore it is better to make a special microtester that meets the stringent requirements of the work in “field” conditions and convenient as a wrist watch. Well base and a “measurement head” of a homemade can, in particular, become familiar to all and accessible indicator of the recording level, is widely used at the time in designs of transistor tape recorders domestic production.
AND HANDS INTACT!
Sharpen the saw — a simple matter, but it has the potential to injure your fingers on the sharp teeth. Use a cut rubber hose. It is sufficient to cut: it up and push on the part of the saw blade under the restraint of the hand and fingers are intact! LUBOVSKY O., Gorny, Read more…
(The end. Beginning at No. 2, 1975)
Very funny flying butterfly can be done in just one evening. You will need scissors, a file, a hacksaw, pliers and, as always, a ruler and a pencil to enlarge the drawing.
Fighter-bomber CURTISS BF2C-1. The main suppliers of single carrier-based fighter for the U.S. Navy until December of 1932 was the company of Curtiss and Boeing. At first, when the Navy had only one aircraft carrier “Langley” and only two fighter squadrons of carrier-based aircraft, between these firms, there was little competition. Military aircraft bought in small quantities from the other, trying to equally support both an alternative source.
— Look, look — the Martians! surprised and enthusiastically shouted we met the boys when Ruslan, bristling with television and radio antennas, approached the pier. We looked at each other and laughed: indeed, and our boat, and ourselves, dressed in black suits with bright yellow bands were like aliens.
The superiority of the American fleet at sea after the Second world war was so undisputed that the creation of new warships, with the exception of aircraft carriers for the United States look out of date. Even with the advent of the only potential rival — the Soviet Union — high-speed submarines (first new diesel and then nuclear) not only changed the situation. At the disposal of the American admirals had bend pretty new destroyers, which were redirected to the new challenges. One of the most ambitious in the history of fleet upgrades — FRAM (Fleet Rehabilitation And Modernisation programme restoration and modernisation of the fleet) the ships of the PLO became more than 130 destroyers “Fletcher”, “Gearing” and “Allen M. Sumner” (see “modelist-Konstruktor” No. 8 in 2002). Updated the ships it provided the needs of the escort and anti-submarine service in the decade ahead.
Why “multichronic”? Because this welding transformer (CT) has many important additional functions. If in traditional “svarochnik”, which has a magnetic core assembled from P – and sh-shaped plates, sometimes nowhere to squeeze at least one or two auxiliary coil, the proposed torus, a doughnut shaped design of the free space was enough. In the end, he is capable of AC/DC to cook “five”, and batteries to charge and metal melting, feeding safe voltage elektrovyzhigatel in circles “Skilful hands”, and perform a host of other things. Fit even to put the question differently: and what a winding and for what purpose wants to additionally have the user of this ST?!
Powertrain with a CVT from a snowmobile “Buran”. His power even enough that the ATV can tow a sled with firewood on the snow. Bridges, box: transfer case and change gear, the propeller shafts from the car “Niva”.