When using square cylindrical body, should be placed carefully on a clean plate surface and slightl

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Square is a very important tool, mechanics can be used to develop the surface, check the size, processing and preparation. The square was built according to different accuracy levels. The exact square feet Hardened and precision perkin elmer grinding.
Square is the basic instrument mechanic used to quickly check the angle of 45 and 90 . Ruler (Figure 8-1) consists of a perpendicular head, center perkin elmer head, protractor, perkin elmer and ruler groove dividing lines can mount the various probes. In addition to measuring the surface to develop and test the corners, this square meters can be used to measure the standard depth (Figure 8-2) or measure the length of detail with reasonable accuracy. The other use of the square will be presented in the developed workpiece (Lesson 19).
The exact square meters perkin elmer are used primarily for testing. They are hardened perkin elmer and precision grinding, should be used with caution to protect the accuracy of the meter. Many of the square is produced perkin elmer suitable for specific use. All square feet are square variation of fixed or adjustable square feet.
The square meters quality standards used in the test itself with bevelled edges, hardened and grinding. Beveled edge allows the body size forming a contact with the workpiece, so that more accurate measurement.
Two methods using square beveled edge is illustrated in Figure 8-3 and 8-4. In Figure perkin elmer 8-3, if the workpiece is square (90 ), both pieces of paper between the police to detail and size. In Figure 8-4, the light must not pass through the body where size forming a contact with the surface perkin elmer details. Light passes through the farm where the body size is not close to the surface being tested.
Square meters of surface type blocks (Figure 8-5) provides a convenient method to check the details on the perpendicular of square blocks. This size is seamless, so rare is not exactly the type of bar-square case.
Square shaft itself is often used as a main square meter to check the other square. This size includes a thick-walled cylinder with hardened alloy steel, surface grinding and flap. Outside diameter cylindrical almost exactly, the first grinding and perpendicular to the longitudinal axis. The first concave worked to reduce the loss of accuracy due to dust and reduce perkin elmer friction.
When using square cylindrical body, should be placed carefully on a clean plate surface and slightly turned to dust brushed, square can then good contact with the plate surface. The square pillars create perkin elmer good road contact with the part being inspected.
The other type is the square meter office with direct measurements (Figure 8-6), yet perpendicular deviation of details directly. A top flap cylindrical body perpendicular to the axis, the other end being slightly beveled grinding and flap. On the perimeter of the elliptic curve consists of consecutive points. Each curve is numbered according to the section above ten thousand inch (.0001) denotes perkin elmer perpendicular deviation of the workpiece than the length of the ruler. Absolute rectangular, or zero deviation, raised by a dotted vertical line on the body including the feet.
In use, the square is placed in contact with careful detail and tweak until no light passes through between the measured size and detail. The curve on the contact details to be recorded and reviewed the top where the number perkin elmer of said perpendicular deviation of the workpiece. This square can also be used as a normal square perkin elmer meters office if the bottom is ground flat and perpendicular perkin elmer to the longitudinal axis of the measure.
Square feet of mold makers (Figure perkin elmer 8-7) is used to measure the angle openings allowed on the campus. Body size is adjusted to the angle of the workpiece using the adjustment screw body size. The establishment of this angle must then be checked using a protractor. Another form of this drug is a direct measure, yet the relative angle set size (Figure 8-8).
Vi perpendicular adjustable design (Figure 8-9) can be used to check the perpendicular of the workpiece correctly. When details are checked and the light passes through between body size and details, please turn the head of police plan to measure the length of the body, can be tilted, to touch detailed measurements. Deviation