Thước đo Starrett Protractor Heads
| Model |
Type |
Finish |
| PNR-1224W |
Non-Reversible |
Black Wrinkle Finish |
| PR-1224W |
Reversible |
Black Wrinkle Finish |
| PR-1224S |
Reversible |
Black Smooth Finish |
| CPNR-1224W |
Non-Reversible |
Black Wrinkle Finish, Chrome on Turret |
| CPR-1224S |
Reversible |
Black Smooth Finish, Chrome on Turret |
| CPR-1224W |
Reversible |
Black Wrinkle Finish, Chrome on Turret |
|