Recess sizes：
| HL-1 | HL-2 | HL-3 | HL-4 | HL-5 |
| HL-6 | HL-7 | HL-8 | HL-9 | HL-10 |
| HL-15 | HL-20 | HL-25 | HL-27 | HL-30 |
| HL-35 | HL-40 | HL-45 | HL-50 | HL-55 |
| HL-60 | HL-70 | HL-80 | HL-90 | HL-100 |
Inspection：
- In-process
- Final Inspection
Note：
- HL-7 and larger size are supplied standard with the tamper resistant hole in the gauge element, which is able to measure both with/without hole parts.
