Mitutoyo Durometer - Digital Shore D 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-334 includes the following... Scale: Shore D Display Digital Graduation 0.5 Range 20~90 Indenter: Sharp Point