Tru Cal International Inc... Our Mission: To provide our customers with the best, most affordable calibration service. Our A2LA scope of accreditation covers a broad array of capabilities in the calibration field. We have been in business for over 20+ years, and we are located in the Chicagoland area, and provide are calibration service to a 400 mile radius of Chicago. We have some of the most experienced technicians in both the electronic and mechanical calibration field with most of our technical expertise from both the manufacturer trained level, and the military trained level. We have free pick up and delivery within 70 miles of Chicago, and offer weekend calibration, (to minimize equipment down time)