Workshop Technology
Spot welding is used for welding

Lap joints in plates having 0.025 mm to 1.25 mm thickness
Butt joints in plates having 0.025 mm to 1.25 mm thickness
Lap joints in plates having thickness above 3 mm
Butt joints in plates having thickness above 3 mm

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Workshop Technology
A progressive limit gauge has

'Go' member at one end and 'Not go' member at the other end
None of the listed here
'Go' and 'Not go' member on the same side of the gauge
Separate 'Go' and 'Not go' members

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