Send your Ames tester in for calibration services for Ames and DoAll Portable Hardness Testers. We recommend you have your amess tester calibrated once per year to maintain accuracy. Check the calibration sticker on the back of your tester for the next calibration date.
If your serial number is older than 12000 please contact us prior to sending your tester for calibration. We cannot offer calibration service on any tester with a serial number of 10000 or older.