durometer
Du*rom"e*ter, n. Etym: [L. durus hard + -meter.] Defn: An instrument for measuring the degree of hardness; especially, an instrument for testing the relative hardness of steel rails and the like.
Du*rom"e*ter, n. Etym: [L. durus hard + -meter.] Defn: An instrument for measuring the degree of hardness; especially, an instrument for testing the relative hardness of steel rails and the like.