Throw-back Indicator

The Standart Electrical Dictionary · 1892 · p. 8

A drop annunciator, whose shutter or drop is electrically replaced.

Bu kavram başka kaynaklarda da geçiyor

Throw — Chamber's Twientieth Century Dictionary (1908)
Throw — Chamber's Etymological of the English Language (1895)
Throw — The Standart Electrical Dictionary (1892)
Throw — Webster's Practical Dictionary- A Practical Dictionary of the Englih Language (1884)
Throw — A Dictionary of the First or Oldest Words in the English Language (1862)
THROW — Vocabulum; or The Rogue's Lexicon (1859)

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