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SAA AS 1098

72nd Edition, 1973

Complete Document


Includes all amendments and changes through CRGD, 1973

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Description / Abstract:

This standard specifies the main features and requirements for roller-type screw calliper gauges, covering a range of product thread diameters from 1.6 to 64 mm.

The calliper gauges are recommended for use for product threads having pitch diameter tolerances not smaller than 50 mm.

No firm recommendations are made on details of the design, but certain requirements covering aspects such as rigidity, stability, convenience in operation and accuracy are specified.

The standard also defines specific terms, marking and protection, and deals in detail with the design of gauging surfaces of annular rollers.

The application of the standard to the gauging of inch series screw threads with metric calliper gauges made to the requirements of this standard is dealt with in Section 7.

NOTE: Whilst this standard covers gauges up to 64 mm in diameter, it is recognized that larger calliper gauges may be required and used for specific applications. When such larger sizes are needed, special care must be exercised with respect to their design and use, but the general principles of this standard may be used as a guide.