Season 16 Episodes13
Cast1

Lynne Adams
Narrator (voice)
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Ranked #12 of 13 in Season 16•−0.3 vs season avg
Delicate electrodes and control grids are assembled inside glass envelopes that are evacuated and sealed to form audio vacuum tubes. Optical modules, wiring and housings are combined into emergency light bars; lightweight wooden pieces are cut and joined into model aircraft; and formed metal shells

Lynne Adams
Narrator (voice)
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"Audio Vacuum Tubes, Light Bars, Wood Model Aircraft, Metal Snare Drums" is episode 7 of How It's Made season 16. It scored 7.4/10 from 21 votes, ranking #12 of 13 episodes this season (season average 7.7). It aired on November 12, 2010.