bt - 60 integrated wire rope flaw detector
hv - 5 vickers durometer
hvs - 1000 digital display microhardness tester
hr - 150a manual rockwell hardness meter
hrs - 150 digital rockwell hardness meter ( large screen, built-in printer )
hr - 150 dt electric rockwell hardness meter
hbs - 3000 digital brinell hardness meter
hv - 1000 microhardness tester