Try square (class -4) [ what is/used/made of/parts/size/least count/specification/safety ]
Try Square
We should be able to know – what is/used/made of/parts/size/least count/specification/safety
What is?
The try square is an instrument which is used to check squareness (angles of 90°) of a surface. The try square has a blade with parallel surfaces. The blade is fixed to the stock at 90°.
Used
1. check the squareness
2. check the flatness
3. mark lines at 90° to the edges of workpieces
4. Set workpieces at right angles.
Made of
Try squares are made of hardened steel.
Parts
1. Stock
2. Blade
3. Burr slot
4. Straight edge
Size
Length of the blade 100 mm, 150 mm, 200 mm
Least count
The accuracy of measurement by a try square is about 0.002 mm per 10 mm length
Specification
Try squares are specified according to the length of the blade
Safety about try square
1. In order to keep the try square accurate, care should be taken not to drop it
2. Always keep the try square at right angles to the surface.
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