Further studies on section thickness measurement.

A rapid, simple, accurate and reproducible technique for measuring section thickness using an instrument known as a surfometer is described. It has shown that microtome settings cannot be relied upon as a means of monitoring the thickness of sections of quenched or wax-embedded tissue. However, there appeared to be a linear relationship between microtome setting and the thickness of dewaxed sections. Microtome settings seem to provide an accurate indication of the thickness of araldite sections.