Calibration of Vernier Caliper

PROCEDURE

Place the standard Lengths of 25 mm between the measuring jaws of the caliper at three different positions and determine the length.
Determine the average length and record the observations.
Repeat the above procedure for the remaining standard lengths (50 mm, 75 mm, 100 mm and 125mm).
Tolerance: + 0.05 mm
Frequency: Once in a month
Maintenance & repairs:
When the instrument does not comply with the requirement specified above; the instrument should be labeled as “Out of Calibration” and should get repaired/ serviced.

After repairing/ servicing the instrument before taking for use, the instrument must be calibrated as per the above-mentioned procedure.

QUALITY ASSURANCE DEPARTMENT

CALIBRATION REPORT OF VERNIER CALIPER

Reference –					Date -
Frequency - Once in a Month					Instrument No. -
Make –
	Place the standard length between measuring jaws of the caliper at three different positions and determine the length.
	Sr. No.	Standard Length Rods (mm)	Reading of Measuring Jaws at Position (mm)					Average Reading (mm)		Limit (mm)
			Upper	Center		Lower				Min.	Max.
	1	25								24.95	25.05
	2	50								49.95	50.05
	3	75								74.95	75.05
	4	100								99.95	100.05
	5	125								124.95	125.05
	Conclusion : Calibration is satisfactory / not satisfactory.
	Next Calibration Due On :
Done By : Date :							Checked By : Date :

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