least count of vernier caliper and screw gauge
Least count If we use a metre scale for measurement of length, it may have graduations at 1 mm division scale spacing or interval. A Vernier scale on caliper may have a least count of 0.02 mm while a micrometer have least count of 0.001  mm.
Travis Van Winkle Travis Scott Van Winkle[1] (born November 4, 1982) is an American actor.[2]
Fidget spinner As of 2017, the patent status of the various fidget spinners on the market was unclear.[8]
Base oil The least refined type which produced by Solvent Refining. It usually consists of conventional petroleum base oils.