Fowler 53-762-102-0 Shore D Durometer are just right for testing the hardness of flexible materials such as rubber and plastics. These gages conform to shore scales and are manufactured in accordance with DIN, ASTM, ISO, and JIS specifications. A 35° blunt point is ideal for testing soft and natural rubber products, neoprene, polyesters, soft PVC, leather, thiokol, nitrile rubbers, wax, felt, and more. A sharp 30° point durometer is ideal for testing hard rubber, hard synthetic materials, e.g., acrylics, glass, polystyrol, thermoplastics, printing rolls, vinyl sheets, cellulose acetates, densified wood, etc. Fowler, an American company, manufactures premium inspection and measurement instruments like electronic indicators, calipers, bore gages, and micrometers. The company, founded in 1946, is headquartered in Canton, MA.