cleaning, operation and calibration of Vernier caliper
1.1 The objective of this SOP is to define the procedure for cleaning, operation & calibration of Vernier caliper Quality control department.
2.1 This SOP is applicable for cleaning, operation & calibration of Vernier caliper in Quality control department
3.1 QC Officer or QC Executive
4.1 QC Manager
5.1 Operating Procedure
5.1.1 For Vernier caliper press on key with the jaw closed.
5.1.2 Ensure zero reading with the jaw closed.
5.1.3 Open the jaw and place the sample in between the jaws and close it.
5.1.4 Note the reading.
5.2 Cleaning Procedure
5.2.1 Clean measuring jaws holding disks with a slightly wet cloth and then with a dry cotton cloth.
5.2.2 Clean measuring jaws holding disks with a dry cotton cloth whenever required during and after the test.
5.3 Calibration Procedure
5.3.1 Calibration of Vernier caliper following standard calibrated equipment are as follow
5.3.2 Calibration can be done in-house or by an external party.
5.3.3 For Vernier caliper press on key with the jaw closed.
5.3.4 Ensure “zero” reading with the jaw closed.
5.3.5 Open the jaw.
5.3.6 Measure the thickness of standard slip gauge (0.05 mm to 1.00 mm) by putting individual gauge between the
5.3.7 Note the observations.
5.3.8 Measure the length, width and height standard metal gauge block (34.90 mm, 25 mm and 08.90 mm
respectively) by putting the standard metal gauge block in between the jaws.
5.3.9 Note the reading.
5.3.10 If calibration is out of calibration then inform to QC department head.
Standard Operating Procedure