Their ice age thermometer was a species of plankton that lives on the surface of the ocean and indicates temperature by its abundance.

The bottom three dots indicated temperature characteristic, tolerance, and decimal multiplier.

Slate has been formed in other parts of the fold belt indicating intermediate pressure and low temperature.

Sometimes, especially near ambient temperatures, false readings will be obtained indicating incorrect temperature.

It is an index mineral indicating high temperature but variable pressure.

This is unlike a normal mercury thermometer, in which the expansion and contraction of mercury itself indicates temperature.

So were the needles of two gauges on the bottom, which indicated transmission-oil pressure and temperature.

Vince Calder Julia, Color of light indicates energy, but not temperature.

A thermometer often uses the thermal expansion of liquids, such as mercury, combined with their ability to flow to indicate temperature.

A third letter can be included to indicate temperature.