Moore and Wright Traditional Screw Pitch Gauges - MW800 Series
Note: SI (System International) metric blades should not be used to check ISO (International Standards Organisation) metric threads due to interference of the thread forms; but ISO metric blades can be used to check SI metric threads.
| 799 | American National | 30 | n/a |
| 800 | Whitworth | 28 | Screw Cutting Gauge included 55 degrees |
| 806 | Unified | 30 | n/a |
