The base of the 199 master precision level is made from the finest quality seasoned cast iron and is precision-machined on the refeference surface. Special alloy iron is used to obtain freedom from thermal effects, with the non-conductive top plate and black wrinkle finish on non-machined surfaces.
- Standard: Starrett factory specification (available upon request)
- The main vials have seven graduations on each side of the bubble
- Auxiliary level vials show lateral position and assist in horizontal setting
- Ground and graduated main vial of 10- second accuracy. One division equals 1/2 thousandth of an inch (0.0005") per foot, or 0.04mm per meter.