tach
(tæk)
U.S. colloq. abbrev. of tachometer. Cf. tacho, tack n.8
| 1966 Publ. Amer. Dial. Soc. 1964 xlii. 9 Tach.., abbreviation of tachometer. 1974 R. M. Pirsig Zen & Art of Motorcycle Maintenance i. iii. 36 The speedometer needle swings back and forth but the tach reads a steady nine thousand. 1980 Family Handyman Sept. 98/2 If you've used a tach/dwell meter for the point adjustment, leave it in place, and attach a timing light. |