National Calibration Inc. (NCI) is a member of the WTI, Inc. Family of Companies.

Growth and Development

We have grown rapidly and experienced continuous improvement in client service and profitability as a result of our affiliation. WTI, Inc. is seeking additional quality-oriented calibration companies to support as independent regional platforms for growth.


WTI, Inc. has served as the parent company for professional service firms for over 50 years. Each affiliated firm shares the vision to be the dominant company in its service area through quality service and a rewarding work environment.

Message To Future Affiliates

How to join the WTI, Inc. Family of Companies

1. Contact us and name your price to sell your calibration business
2. If we agree, we work together to create the value you seek
3. Meet your targets, complete the transaction, and stay as a consultant

Free Benefits While Transaction Pending

1. A full scale, web-based Laboratory Information Management System (LIMS)
    for quality and efficiency for independent laboratories - CalHub™
2. Loaned calibration equipment that we can justify
3. Bonus incentive for each added technician

Contact Us To Learn More

Ed Poe, Director
WTI, Inc. Family of Companies
(602) 437-8979 ext. 309

Arizona   Nevada *
3737 East Broadway Road
Phoenix, AZ 85040
(602) 437-0114 or (800) 624-4500
Fax (602) 437-8897
driving directions

  6633 West Post Road
Las Vegas, NV 89118
(800) 624-4500
driving directions

New Mexico * Utah * Texas *
105 Industrial Park Loop, Suite C
Rio Rancho, NM 87124
(800) 624-4500
driving directions
420 Lawndale Drive
Salt Lake City, UT 84115
(800) 624-4500
driving directions
5600 Bintliff Drive
Houston, Texas 77036-2102
(800) 624-4500
driving directions
   Tools Commonly Calibrated * Field labs capable of field accredited calibrations Cities Regularly Serviced