Yamamoto Scientific Tool Laboratory Hardness standard HMV-100

High-precision hardness standards are ISO/JIS-compliant standard test pieces for indirect verification of hardness gauges, which are used worldwide due to their standard values based on the international standard of hardness uniformity, developed in Japan and recognized worldwide. Compliant with JIS/ISO, high-precision hardness standards pursue "zero variation" and have the motto of "measure with peace of mind," and are widely trusted and highly regarded both at home and abroad for their 1. high uniformity, 2. stability, and 3. international and universal standard values.