Instrument calibration protocol for Rubber Hardness Tester (Shore Hardness A°)
| Instrument | Rubber Hardness Tester (Shore Hardness A°) |
| Instrument Code Number | |
| Refer Operation SOP No | |
| Make | GGR-30 |
| Model No. | Hiroshima |
| Date of Calibration | |
| Next Due Date |
| Sr. No. | Reading on Master | Observation | Mean |
Limit: 50 ±2 A°
Remarks: Calibration Satisfactory/ Not Satisfactory
| — | Calibrated By | Checked By | Approved By |
| Signature | |||
| Date | |||
| Name | |||
| Department | Quality Control | Quality Control | Quality Control |