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  2. Combination square - Wikipedia

    en.wikipedia.org/wiki/Combination_square

    [4] [2] The standard or square head has three adjacent flat faces, two of them meet square to one another, and the third face is angled away at 45°. When attached one face is parallel to the rule, one face is perpendicular, and one face is at 45°. The standard head usually incorporates a small spirit level and a small removable scriber. [4]

  3. Waveguide flange - Wikipedia

    en.wikipedia.org/wiki/Waveguide_flange

    The connecting face of the flange is either square, circular or (particularly for large [1] or reduced-height rectangular waveguides), rectangular. The connection between a pair of flanges is usually made with four or more bolts , though alternative mechanisms, such as a threaded collar, may be used where there is a need for rapid assembly and ...

  4. Lineman's pliers - Wikipedia

    en.wikipedia.org/wiki/Lineman's_pliers

    Lineman's pliers have a tapered nose suitable for reaming the rough edge of a 1 ⁄ 2-inch (13 mm) or larger conduit, or cleaning sharp metal from the inside of a standard metal knockout in an electrical enclosure such as a junction box or breaker panel. Some brands manufacture pliers (i.e. Ideal) with a narrower jaw, suitable for reaming out ...

  5. Square (tool) - Wikipedia

    en.wikipedia.org/wiki/Square_(tool)

    [5] [6] Centre squares are also manufactured to be used as a head for a combination square. [7] Combination square, or sliding square A combination square features a ruler (the blade) which can be slid and adjusted within a head (the stock). The head usually has one face at 90° to the ruler, and another face at 45° to the ruler.

  6. Machinist square - Wikipedia

    en.wikipedia.org/wiki/Machinist_square

    A machinist square or engineer's square is the metalworkers' equivalent of a try square. It consists of a steel blade inserted and either welded or pinned into a heavier body at an angle of 90°. Usually a small notch is present at the inside corner of the square.

  7. Buttress thread - Wikipedia

    en.wikipedia.org/wiki/Buttress_thread

    In oil field tubing, buttress thread is a pipe thread form designed to provide a tight hydraulic seal. The thread form is similar to that of Acme thread [10] but there are two distinct threaded portions of differing diameters and profiles, the larger having a wedging profile, with a tapered sealing portion in between the larger and smaller diameters.

  8. Dual in-line package - Wikipedia

    en.wikipedia.org/wiki/Dual_in-line_package

    The number of leads is always even. For 0.3 inch spacing, typical lead counts are 8, 14, 16, and 20; less common are 4, 6, 18, 24, and 28 lead counts. To have an even number of leads some DIPs have unused not connected (NC) [nb 1] leads to the internal chip, or are duplicated, e.g. two ground pins. For 0.6 inch spacing, typical lead counts are ...

  9. Square thread form - Wikipedia

    en.wikipedia.org/wiki/Square_thread_form

    The square thread form is a common screw thread profile, used in high load applications such as leadscrews and jackscrews. It gets its name from the square cross-section of the thread. [ 1 ] It is the lowest friction and most efficient thread form, but it is difficult to fabricate.

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