| 摘要 |
<p>This is designed to avoid the errors in measurement arising from the use of gauges or classical feeler gauges when these are made of steel, ceramic materials or tungsten carbide, given the different expansion coefficients of these materials in comparison with those of aluminium parts or shapes when substantial ambient temperature changes occur in the work area. The system consists of the use of gauges, standard feeler gauges or any other measuring device manufactured using the same type of material as that which is to be measured, that is, aluminium or an aluminium alloy, such that this offers the same coefficient of expansion. It is also planned to subject the said measuring devices, or at least their working surfaces or those which make contact with others, to a hardening process, such as anodizing or hard chroniumplating, for example, to gain perfect flatness and avoid wear.</p> |
