It is well known that warships is not only a means of waging war at sea. And in peacetime the Navy has to solve a wide range of tasks — carry out protection of territorial waters to combat violators of the state border, to carry out diplomatic missions, to “show the flag” and demonstrate the power of his country in “hot spots” of the planet.
The device was created to check the capacity of Nickel-cadmium and Nickel-metal hydride batteries, but they can check for any small capacity batteries and dry cells. The device is composed of two parts — digital multimeter and active load. The voltmeter consists of a transmitter “amplitude-time” on the element DD1.1 and the transistors VT1 — VT4, generator counting pulses on DD1.2 and pulse counters for DD2 — DD4.
Most people mention the drill cause discomfort. And here at artisan people, the attitude towards this technique is different. Perhaps only this mechanism facilitates processing of complex surfaces and hard to reach areas in the molded parts. And therefore for the craftsmen, along with other necessary devices and equipment in the Arsenal of a home workshop it is worth, and electric drill.
When drilling brick or concrete wall it is necessary to periodically clean the hole from dust particles. Some people use a sort of syringe, the rubber bulb. I propose to use in these cases wetted in water and braided between two segments of wire with a piece of cotton. The dust adheres and is easily Read more…
Drilling steel mechanical hand drill even in the upright position without special tools is not easy: need and pressure to create, and perpendicular to endure. What if you set one of the axes of a two speed drill heavy flywheel? Here, the gyroscopic effect will get, and the increased mass with the increase in pressure Read more…
If the usual wooden handle plant shown on the picture sleeve with the threaded end of the welded nuts will get a “turret” tool, which, depending on the screw-in replaceable tip turns into a rake or a shovel, hoe, cultivator and even an ice pick for chipping ice on a winter track.
In the staff room phone rang: asked physics teachers. Some of those present said: “Now it’s in the shop”. How to be? Because the school has no internal telephone communication and without the “intentional” here, perhaps, is not enough.
In 1921 pyatnadcatiletnij student Alexander Yakovlev read a book on the history of technology. In one of the chapters talked about the emergence of aviation, there was a model description of the airframe and was given his scheme. And here’s the apartment… turned into a workshop. Smells like glue, the floor littered with shavings and scraps of paper. No games, walks, entertainment. More than a month was built by Alexander of thin pine planks, obtiva them with paper and fastening with nails and glue glider model.
In a small garden house or in a small room at the cottage this furniture will be very functional though, because that day, being assembled in position “sofa”, takes up little space, and at night turns into a large soft bed. This sofa bed besides convenient both for transportation and for storage because the lightweight and collapsible. It consists of two main parts: the soft the hard mattress and slatted base.
The so-called deaf — solid fences, of whatever material they may be built that produce unpleasant experience and certainly not adorn a garden or summer cottage. But light hedge or fence from mesh-netting is not always and not all satisfied, I want something more permanent and durable. Perhaps some compromise can serve as a homemade fence made of shaped concrete bricks, each of which has in the middle a kind of window: thanks to this fence for all its monumentality it turns out delicate, lightweight and looks very aesthetically pleasing. Hungarian journal “Earmaster” reveals the secret to getting these blocks of concrete — on a fairly simple technology that is available to anyone interested.
