Antique L.S. Starrett No.40 Thread Pitch Gauge – 1885 Patent Date – 9 to 40 TPI
USD 19.66 USD
Specifications
| Brand | Starrett |
| Country Of Origin | United States |
22 total tpi are covered, ranging from 9 thru 40 tpi. This pre-dates the twist locks and just uses rivets to hold the individual arms in place. Still opens and closes smoothly and all the gauge points are there and straight.