|  | 1. | Durometer selection is also affected by skater weight, and temperature. 
 
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|  | 2. | Wheels for indoor use are hardest with a durometer of 88 97. 
 
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|  | 3. | Contoured back-ups are routinely produced in a 90 durometer nitrile. 
 
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|  | 4. | However, depending on the durometer of the wheels used, it can be slower. 
 
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|  | 5. | If it does not penetrate at all, then the durometer is 100 for that scale. 
 
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|  | 6. | He invented the first quadrant durometer in 1915 to measure the hardness of polymers and other elastomers. 
 
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|  | 7. | The ASTM D2240 standard recognizes twelve different durometer scales using combinations of specific spring forces and indentor configurations. 
 
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|  | 8. | Because of the low durometer of this material it is often used in low-torque peristaltic pumps. 
 
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|  | 9. | Wheels for outdoor use are softer with a durometer of 82 87, and tend to wear more quickly. 
 
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|  | 10. | The durometer would be inserted into the hole, allowing the meter to perform the test beneath the ball's surface. 
 
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