Actual size is determined while measuring a component.
2) What is determined while measuring a component ?
Related Measuring MCQ - Machinist(Set-1) with Answers
Steel Rule is made of Stainless steel.
The try-square is a precision instrument which is used to check the squareness of a surface and the flatness of surfaces.
Inside caliper has two legs with feet that turn outward, used to measure inside dimensions, like diameter of a hole etc.
The base unit of length as per S.I. unit is meter.