- Tension of regulating spring is constant, so marks made by point are uniform in depth and size for each setting
- No hammer required, mechanism automatically strikes a blow when downward pressure is applied
- Adjustable knurled cap regulates force of blow
- All working parts are made of properly hardened tool steel
![L.S. Starrett PT99437 CLAMP, 1 EA, #64492 L.S. Starrett PT99437 CLAMP, 1 EA, #64492](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/238510/342517/681-64492__69842.1593163128.jpg?c=2)