State system for ensuring the uniformity of measurements. Metallic materials. Instrumented indentation test for hardness and materials parameters. Part 1. Test method
State system for ensuring the uniformity of measurements. Standard thermoelectric converters platinumrhodium/platinum and platinumrhodium/platinumrhodium of the first, second and third grades. Verification procedure
Signal conversion equipment for simultaneous duplex data transmission on switched channels of general telephone network and unswitched voice frequency channels. Type and basic parameters
