Screw Gauge : . It is used for measuring diameter of circular objects mostly wires, with an accuracy of 0.001cm.
Vernier Calipers: The Vernier Caliper is a precision instrument that can be used to measure internal and external distances extremely accurately :
Spherometer:A spherometer is an instrument for the precise measurement of the radius of a sphere. Originally, these instruments were primarily used by opticians to measure the curvature of the surface of a lens.
physical balance : In simple terms a physical balance is a weighing instrument which helps in measuring the mass of a substance or more specifically the gravitational mass of the substance.
stop watch :a special watch with buttons that start, stop, and then zero the hands, used to time races.