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  2. Tachometer - Wikipedia

    en.wikipedia.org/wiki/Tachometer

    A tachometer that can indicate up to 7000 RPM (left) A tachometer (revolution-counter, tach, rev-counter, RPM gauge) is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. [1] The device usually displays the revolutions per minute (RPM) on a calibrated analogue dial, but digital displays are ...

  3. Restrictions on cell phone use while driving in the United ...

    en.wikipedia.org/wiki/Restrictions_on_cell_phone...

    The laws regulating driving (or "distracted driving") may be subject to primary enforcement or secondary enforcement by state, county or local authorities. [1]All state-level cell phone use laws in the United States are of the "primary enforcement" type — meaning an officer may cite a driver for using a hand-held cell phone without any other traffic offense having taken place — except in ...

  4. Tacheometry - Wikipedia

    en.wikipedia.org/wiki/Tacheometry

    Wild brand subtense bar. Another device used in tacheometry to measure distance between the measuring station and a desired point is the subtense bar. [2] This is a rigid rod, usually of a material insensitive to change in temperature such as invar, of fixed length (typically 2 metres (6.6 ft)).

  5. Redline - Wikipedia

    en.wikipedia.org/wiki/Redline

    Tachometer showing red lines above 14,000 rpm. Redline refers to the maximum engine speed at which an internal combustion engine or traction motor and its components are designed to operate without causing damage to the components themselves or other parts of the engine. [ 1 ]

  6. Tachograph - Wikipedia

    en.wikipedia.org/wiki/Tachograph

    The tachograph was originally introduced for the railways so that companies could better document irregularities. The inventor was Max Maria von Weber, a civil servant, engineer and author.

  7. Tach timer - Wikipedia

    en.wikipedia.org/wiki/Tach_Timer

    The tach timer is usually used to schedule engine maintenance, although it is just an approximation of "Time in service" which is used to time and schedule aircraft maintenance. Time in service is defined in 14 CFR 1.1 [ 2 ] as the actual time in the air, whereas tach time measures engine revolutions, which would still count time on the ground ...

  8. Rally-Pac - Wikipedia

    en.wikipedia.org/wiki/Rally-Pac

    Rally-Pac is the name given to an optional tachometer and clock fitted to certain car models built by the Ford Motor Company in the mid-1960s. The steering column-mounted accessory was introduced in 1963 soon after Ford's successful participation in that year's Monte Carlo Rally , hence the name.

  9. AutoZone - Wikipedia

    en.wikipedia.org/wiki/AutoZone

    AutoZone, Inc. is an American retailer of aftermarket automotive parts and accessories, the largest in the United States. Founded in 1979, AutoZone has 7,140 stores across the United States, Mexico , Puerto Rico , Brazil , and the US Virgin Islands .