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  2. Wiggler (tool) - Wikipedia

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

    When the horizontal distance from the workpiece to the axis of the shank is exactly equal to the radius of the second cylinder, the second cylinder turns perfectly coaxially with the shank. Even a very small displacement in the direction of the workpiece cause the second cylinder to "kick off" and displace dramatically along the workpiece edge.

  3. Radius gauge - Wikipedia

    en.wikipedia.org/wiki/Radius_gauge

    Two types of radius gauges. A radius gauge, also known as a fillet gauge, [1] is a tool used to measure the radius of an object. [2] Radius gauges require a bright light behind the object to be measured. The gauge is placed against the edge to be checked and any light leakage between the blade and edge indicates a mismatch that requires ...

  4. Total indicator reading - Wikipedia

    en.wikipedia.org/wiki/Total_indicator_reading

    For example, all depths of cut in lathe work must account for whether they apply to the radius (that is, per side) or to the diameter (that is, total). Similarly, in shaft-straightening operations, where calibrated amounts of bending force are applied laterally to the shaft, the "total" emphasis corresponds to a bend of half that magnitude.

  5. Thread pitch gauge - Wikipedia

    en.wikipedia.org/wiki/Thread_pitch_gauge

    Three different sets of threading gauges. The uppermost gauge is an ISO metric pitch gauge, the larger gauge in the center is for measuring the Acme thread form, and the lower gauge is for Whitworth screws. A thread gauge, [1] also known as a screw gauge [2] or pitch gauge, [3] is used to measure the pitch or lead of a screw thread.

  6. List of gear nomenclature - Wikipedia

    en.wikipedia.org/wiki/List_of_gear_nomenclature

    It is used as a measure of the effective size of a gear. The test radius of the master, plus the test radius of the work gear is the set up center distance on a composite action test device. Test radius is not the same as the operating pitch radii of two tightly meshing gears unless both are perfect and to basic or standard tooth thickness. [1]

  7. Indicator (distance amplifying instrument) - Wikipedia

    en.wikipedia.org/wiki/Indicator_(distance...

    In metal engineering workshops, where a typical application is the centering of a lathe's workpiece in a four jaw chuck. The dial indicator is used to indicate the run-out (the misalignment between the workpiece's axis of rotational symmetry and the axis of rotation of the spindle) of the workpiece, with the ultimate aim of reducing it to a ...

  8. Feeler gauge - Wikipedia

    en.wikipedia.org/wiki/Feeler_gauge

    Feeler gauge set (25 pieces, 0.03~1.0 mm measurement range) Measuring the valve clearance of a DOHC engine, between camshaft and tappet (here: 0.004 in ≈ 0.10 mm). A feeler gauge is a tool used to measure gap widths. Feeler gauges are mostly used in engineering to measure the clearance between two parts. [1]

  9. Run-out - Wikipedia

    en.wikipedia.org/wiki/Run-out

    Radial run-out will measure the same all along the machine axis. Axial run-out is caused by the tool or component being at an angle to the axis. Axial run-out causes the tip of the tool or shaft to rotate off-centre relative to the base. Axial run-out will vary according to how far from the base it is measured.

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