硬度計是測量物體硬度的儀器，表示材料抵抗硬物體壓入其表面的能力。它是金屬材料的重要性能指標之一。一般硬度越高，耐磨性越好。根據所測硬度單位：洛氏硬度計、維氏硬度計、顯微硬度計、布氏硬度計、邵氏硬度計、巴氏硬度計、里氏硬度計、韋氏硬度計、肖氏硬度計、布洛維硬度。根據使用方式：便攜式硬度計、臺式硬度計。

進口硬度計美國Check-Line Asker X型硬度計專為測量橡膠，泡沫，海綿，塑料的硬度

Common Hardness scales:

Shore A Normal rubber

Shore D Hard rubber & plastics

Asker C Soft rubber

Asker F Urethane foam, sponge and polystyrene foam

Special Hardness Scales

Asker JA Normal rubber & softer plastics

Asker B Semi rigid rubber & plastics

Asker C2 Soft rubber & sponge Asker

Asker CS Polystyrene foam

Asker E Soft & cellular rubber

Asker Hardness testers feature portable design, ease of operation, non-destructive measurement and optional peak indicators. Supplied with 3 point NIST traceable calibration cert.

The Checkline Asker High Performance series has an accuracy of ±.75 point and is available in Type F for soft materials like sponge rubber and urethane foam.

Asker models are available in ASTM D 2240 durometer Types: Shore A Hardness, Shore D Hardness and Asker C Hardness durometer scales.

Conforms to: JIS K 6253, JIS K 7215, ASTM D 2240, ISO 7619, ISO 868, DIN 53505