6 Things to know before buying Durometers!    1. What are Durometers and how it works? Durometers are portable instruments for measuring hardness. It’s a measurement tool. It has a testing procedure for using it. It’s a specialized, self-referencing scale for comparing the hardness of a comparable group of materials. Note: Durometer Hardness measurements are unitless. This is the main reason comparing hardness between different Durometer hardness scales is not recommended. Though these sorts of charts are widely available, comparing different hardness scales is only useful as rough comparisons. A durometer or Shore dur...