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Phone: 586.727.8890         Fax: 586.727.5548         PO Box 610842, Port Huron, MI 48061

Please view our selection of Used parts, charts & overlays available for purchase.  Click Here.


Since 1984 Unlimited Services, Inc. has been selling, servicing and calibrating Optical Comparators of all makes and models. We pride ourselves in being a company that can provide superior service for all of your Optical Comparator needs. We will go the distance to insure quality workmanship above and beyond our competitors. Unlimited Services, Inc. was established by James D. Mattise, Sr. in 1984. His two sons James Jr. & Wayne continue to provide the same superior workmanship.

Servicing - All makes and models of Metrology Optical Comparators including: Jones and Lamson (J&L), Starrett, OGP, Kodak, Excello, Deltronic, Gage Master (Baty), Scherr-Tumico, Mitutoyo, Nikon and many others.