Page 118 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

Fig 3

Fig 4

Grade II accuracy
For general workshop applications.
B.I.S. recommendations
Three grades of slip gauges are recommended as per IS 2984. They are:

- Grade ‘0’
- Grade I
- Grade II.
Care and maintenance points to be remembered while using slip gauges.

- Use a minimum number of blocks as far as possible while building up a particular dimension.
- While building the slip gauges, start wringing with the largest slip gauges and finish with the smallest.

While holding the slip gauges do not touch the lapped surfaces.
If available use protector slips on exposed faces.(Fig 5)

Fig 5

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CITS : C G & M - Fitter - Exercise 77