Mitutoyo Durometer - Digital Shore A Durometers are suitable for testing natural rubber, neoprene, polyesters, P.V.C., leather, Thiokol, nitril, wax, vinyl, cellulose acetates, glass, polystyrol and other materials. Model HH-336 includes the following... Scale: Shore A Display Digital Graduation 0.5 Range 10~90 Indenter: Blunt Taper