Vernier Calipers:The Vernier caliper is an exceptionally precise measuring instrument; the conception miscalculation is 1/20 mm = 0.05 mm.
Close the mouth lightly on the object to be measured.
If you are measuring something with a around thwart section, get on to guaranteed with the intention of the axis of the object is perpendicular to the caliper. This is de rigueur to ensure with the intention of you are measuring the satiated diameter and not just a chord.
Ignore the top extent, which is calibrated in inches.
Use the underside extent, which is in metric units.
Notice with the intention of here is a fixed extent and a sliding extent.
Vernier Calipers | Current World News