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2. Chip log - Wikipedia

   en.wikipedia.org/wiki/Chip_log

   A chip log, also called common log, [1] ship log, or just log, is a navigation tool mariners use to estimate the speed of a vessel through water. The word knot, to mean nautical mile per hour, derives from this measurement method.

3. Weigh in motion - Wikipedia

   en.wikipedia.org/wiki/Weigh_in_motion

   Weigh-in-motion or weighing-in-motion (WIM) devices are designed to capture and record the axle weights and gross vehicle weights as vehicles drive over a measurement site. . Unlike static scales, WIM systems are capable of measuring vehicles traveling at a reduced or normal traffic speed and do not require the vehicle to come to a st

4. Tachograph - Wikipedia

   en.wikipedia.org/wiki/Tachograph

   The trace closest to the outer edge is the speed trace. The disc is preprinted with a speed scale and the stylus produces a mark corresponding with the speed of the vehicle at any given time. It is important that the maximum speed (Vmax) specification of the chart matches that of the tachograph head for the speed to be correctly recorded.

5. Navigational instrument - Wikipedia

   en.wikipedia.org/wiki/Navigational_instrument

   Navigational instruments are instruments used by nautical navigators and pilots as tools of their trade. The purpose of navigation is to ascertain the present position and to determine the speed, direction , etc. to arrive at the port or point of destination.

6. Inertial navigation system - Wikipedia

   en.wikipedia.org/wiki/Inertial_navigation_system

   An inertial navigation system (INS; also inertial guidance system, inertial instrument) is a navigation device that uses motion sensors (accelerometers), rotation sensors and a computer to continuously calculate by dead reckoning the position, the orientation, and the velocity (direction and speed of movement) of a moving object without the ...

7. Speedometer - Wikipedia

   en.wikipedia.org/wiki/Speedometer

   At Conformity of Production Audits the upper limit on indicated speed is increased to 110 percent plus 6 km/h (3.7 mph) for cars, buses, trucks, and similar vehicles, and 110 percent plus 8 km/h (5.0 mph) for two- or three-wheeled vehicles that have a maximum speed above 50 km/h (31 mph) (or a cylinder capacity, if powered by a heat engine, of ...

8. Tachometer - Wikipedia

   en.wikipedia.org/wiki/Tachometer

   The first mechanical tachometers were based on measuring the centrifugal force, similar to the operation of a centrifugal governor. The inventor is assumed to be the German engineer Dietrich Uhlhorn; he used it for measuring the speed of machines in 1817. [3] Since 1840, it has been used to measure the speed of locomotives.

9. Radar speed gun - Wikipedia

   en.wikipedia.org/wiki/Radar_speed_gun

   A radar speed gun, also known as a radar gun, speed gun, or speed trap gun, is a device used to measure the speed of moving objects. It is commonly used by police to check the speed of moving vehicles while conducting traffic enforcement , and in professional sports to measure speeds such as those of baseball pitches , [ 1 ] tennis serves , and ...