Mass Standards and Test Weight Calibration
OCS offers comparison plans for standards and test weights.
All calibrations are ISO/IEC 17025 accredited and traceable to the International System of Units (SI) through NIST.
OCS services include:

• Periodic verification
• Refurbishments for cast iron and working class masses
• NIST Traceable
• ISO 17025 Certificates
• Ship-in, and pickup/drop off service
• Fast turnaround
Our technicians provide calibration for:
• Custom weights
• Standard mass sets
• Test blocks
• Test weights
Typical weights and standards we calibrate include but are not limited to:
• Denver Instruments
• Rice Lake Weighing Systems
• Troemner
OCS sells a broad range of products for weighing, measuring, and testing applications. If you're looking for new calibration equipment, browse our product lines or contact Tim Gunn at 800.362.0364.
Specialty Products
OCS specialty product lines include calibration equipment in the areas of Dimensional,
Force Measurement, Laboratory, Pressure, Speed and Torque. We have relationships
with a wide variety of specialty product manufacturers and are confident that
we can find and provide you with the equipment you need.
Standard Product Line
Browse our standard scales, weighing and measurement systems. More than 80 years experience has given us a rare depth of knowledge in the weighing and measurement field.