These are the finest levels available, used for precision work that is typically required in industry. They all have these features:
All level bases are made from the finest quality seasoned cast iron and are precision-machined on the reference surface
Non-machined surfaces have an attractive, black wrinkle finish
All models except the No. 199 have an involute longitudinal groove between the bearing flats for accurate seating on round work. This groove has a special involute design, permitting better centering and greater capacity to handle larger rounds
Groove and bearing flats are machined together for maximum accuracy
