Rail vehicle for track investigation
Rapid determination of metal strength from hardness tests
Rapid determination of metal strength from hardness tests
Real time asphalt pavement quality sensor using a differential a
Rebound-type hardness tester
Recording soil penetrometer
Reference-load variable hardness tester
Resiliency testing device for tennis balls
Rheological penetrometer
Rod insertion method and friction reducing device
Roll hardness observation testing apparatus and process
Roll-firmness measuring device