- US Sales
- International Sales
- Technical Support
- Human Resources
The Invar Master Bar is required for verifying the calibration of HM-240 Strain Gauge. Models are available in either English or metric units. The bar is made of Invar nickel-iron alloy with a very low coefficient of thermal expansion. Threaded stainless steel inserts with 2, 4, 6, 8 and 10in or 5, 10, 15, 20, and 25cm spacing are used to verify gauge spacing.
HM-241 is marked in English measurements, while HM-241F is indicated in Metric.
Enter your name, email, and questions below and we will reply during business hours (8am - 5pm EST, Monday through Friday).