Diameters, Inc.: Yesterday and Tomorrow

Machinists Herb Illgen and Bob Zarling founded Diameters, Inc., in 1974, to provide southeastern Wisconsin customers with high-quality centerless grinding. Three expansions and over 20 years later, Diameters, Inc., continues that tradition, now with over 30 people in a modern facility completed in 1996.

Our core business includes internal, collet, and between-center grinding as well as inspection services. Yet, our mission remains the same -- creating satisfied customers through quality workmanship, innovative solutions, quick turnaround, and competitive pricing. Customer satisfaction is both our goal and your guarantee.


  16700 West Ryerson Road | New Berlin, Wisconsin 53151 | Phone - 262.785.8720 | Fax - 262.785.8724
  Designed and maintained by Softek Services, Inc.