calibration services, inc. ( CSI ) is an on-site and in-house calibration firm specializing in calibration, and service of mechanical testing devices. For over 40 years, we have provided comprehensive calibration and service to clients in 11 states, the Caribbean (U.S. Territories) and other locations. Service Offering. Balances or scales should always be checked with reference weights that you can rely on and trust. Our accredited mass laboratories clean, calibrate and adjust your weights, then document the results in calibration certificates with details of conventional mass correction, uncertainty and traceability information according to ISO/IEC 17025. Service for your applications. Individual, reliable, competent. Quality and reliability are the cornerstones of our company's philosophy. That is why we consider a comprehensive service concept simply par for the course, from strict quality control, installation and commissioning through to seamless support across the entire product life cycle. Home » Services » Equipment Calibration Services » Weight and Scale Calibration. Since 1939, J.A. King has been an innovative leader in weight and scale calibration services. With over 75 years of technical expertise, you can be assured our level of customer service and capability have been fine-tuned and perfected. Returning instruments for calibration and service is straightforward. Just follow the instructions below to get online cost estimates and receive an email containing your RMA * number within a few minutes.. If your product is an A2, RT-2M, RT-2X or FX100 Audio Analyzer please contact NTi Audio prior to shipping your instrument in order to verify any applicable special instructions. We carry all kinds of calibration weights. Down below, you'll see individual calibration weights and calibration weight sets. If you're looking for weights to calibrate that inaccurate scale, or if you just want a test weight, here's the place to find what you need. Durin