phototachometer
nounEtymology From photo- + tachometer.
1
A tachometer that measures revolutions by optical sensing.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
Etymology From photo- + tachometer.
A tachometer that measures revolutions by optical sensing.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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