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A "wire wrap tool" has two holes. The wire and 1 ⁄ 4 in (6.4 mm) of insulated wire are placed in a hole near the edge of the tool. The hole in the center of the tool is placed over the post. The tool is rapidly twisted. The result is that 1.5 to 2 turns of insulated wire are wrapped around the post, and above that, 7 to 9 turns of bare wire ...
This wire was developed initially for circuit assembly by the wire wrap technique but also serves well for miniature point-to-point wiring on perfboard. Bare copper wire is useful when merging a number of connections to form an electrical bus such as the circuit's ground , and when there is enough space to properly route connections, instead of ...
RAF aircrew with one of their Bristol Beaufighters on a PSP airstrip at Biferno, Italy, August 1944. Marston Mat, more properly called pierced (or perforated) steel planking (PSP), is standardized, perforated steel matting material developed by the United States at the Waterways Experiment Station shortly before World War II, primarily for the rapid construction of temporary runways and ...
A lashing is an arrangement of rope, wire, or webbing with linking device used to secure and fasten two or more items together in a somewhat rigid manner. Lashings are most commonly applied to timber poles, and are commonly associated with cargo, containerisation, the Scouting movement, sailors , and gardeners .
A small reel of insulated copper wire [2] is mounted at the top of the tool. The wire runs down the center of the wiring pencil and through a hardened tip, which is small enough to move between the pins of 0.1" pitch DIL chip allowing connections to be wrapped and the wire to be led across the circuit board to the next point it's needed.
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Directional boring machine. Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig.
The stone is first examined to determine the direction of the grain and to identify any potential defects. After the location of the intended split is chosen, a line is scored on the surface of the stone. A number of holes are then cut or drilled into the stone face along the scored line approximately 10 to 20 centimetres (3.9 to 7.9 in) apart.