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The new company, Lux Products Corporation retained the original Lux name and continued to produce thermostats, timers, and additional household items. [2] Lux Products was headquartered in Philadelphia, Pennsylvania, with its U.S. plant based in Laredo, Texas. Johnson Controls Inc acquired the assets of Lux Products Corporation in October 2018. [3]
In an indoor–outdoor thermometer based on a conventional liquid-in-glass thermometer, the stem of the outdoor thermometer is connected to the bulb by a long, flexible or semi-rigid capillary. The temperature scale is marked on the stem as usual. However, the temperature that is actually measured is the temperature at the bulb. [1]
Measuring instruments in fiction: Captain Nemo and Professor Aronnax contemplating thermometers, barometers, clocks, etc. in Jules Verne's 1869-1870 science fiction novel Twenty Thousand Leagues Under the Seas Fun measuring instruments: a Love Meter and strength tester machine at a Framingham, Massachusetts rest stop.
A frequency counter is an electronic instrument, or component of one, that is used for measuring frequency. Frequency counters usually measure the number of cycles of oscillation or pulses per second in a periodic electronic signal .
Resistance thermometers, also called resistance temperature detectors (RTDs), are sensors used to measure temperature. Many RTD elements consist of a length of fine wire wrapped around a heat-resistant ceramic or glass core but other constructions are also used.
A tally counter is usually cased in metal and is cylindrical in shape. Part of the circle is flattened out and contains a window of plastic or glass. Inside the counter are a number of rings with the numbers from 0 to 9 in descending order going clockwise. Most counters have four such rings, allowing the user to count up to 9999.
The Sessions Clock Company ("Sessions") was one of several notable American clock companies centered in Connecticut.Sessions and its predecessor (E.N. Welch Company), along with the E. Ingraham Company, the Ansonia Clock Company, the New Haven Clock Company, the Seth Thomas Clock Company, the William L. Gilbert Clock Company, and the Waterbury Clock Company collectively produced most of the ...
These have inaccurate absolute timing (more than 100 parts per million) that is yet very repeatable (often less than 1 ppm). Software can do the math to make these into accurate RTCs. The hardware timer can produce a periodic interrupt, e.g. 50 Hz, to mimic a historic RTC (see below). However, it uses math to adjust the timing chain for accuracy:
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