Page 122 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

Metal or other particles between the measuring faces of slip gauges will make it impossible for them to adhere to
each other.(Fig 2)

Fig 2

Remove burrs from the workpieces with an oilstone. (Fig 3)

Fig 3

Use chamois leather to wipe the carbon tetrachloride after cleaning.
Use a felt pad or rubber mat for placing the instruments while working.

Handle the instruments with care and do not allow them it to mix up with other tools.
Application of slip gauges

Objectives : At the end of this exercise you shall be able to
• name the different accessories used along with slip gauges
• state the uses of different accessories.

Slip gauges can be put to a variety of precision work when used along with certain special accessories.
Measuring external and internal sizes
Slip gauges can be used for checking external and internal measurements. For this purpose a set of high preci-
sion special jaws are used along with a holder. (Figs 1,2 & 3)

Fig 1

The pair of special jaws (Fig 2) will have a flat surface at one end and a curved surface at the other end to facili-
tate external and internal measurements. The slip gauge holder can be used for a variety of applications. (Fig 4)
Using as a height gauge

A height gauge can be built up by using a base block, (Fig 5) slip gauge holder, scriber point (Fig 6) and the required
slip gauges. The height gauge (Fig 7) built up with these accessories can be used for very accurate layout work.

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CITS : C G & M - Fitter - Exercise 77