The new center console housed a rally-type electric clock, and full instrumentation now included a vacuum gauge.
A thermocouple can be used as a vacuum gauge over the range of approximately 0.001 to 1 torr.
The thermocouple was first used as a vacuum gauge by Voege in 1906.
One unique feature was a vacuum gauge on the instrument panel.
This would require a vacuum gauge measuring the pressure drop or abbsolute pressure at the sensor.
In 1874 he published a paper with a new and innovative vacuum gauge, this is known as the McLeod gauge.
Other MPT successful products include a vacuum gauge, microwave amplifier modulators and test equipment.
Also attached to this box were the vacuum gauge and a third pipe which led to what appeared to be a servo for the brake (?!).
On board the plane, he was watching the vacuum gauge with a tense frown.
Buyers could now choose an Econominder instrument package that included a vacuum gauge to point out when optimum fuel economy was being attained.