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Tachometer

Tachometer

A tachometer is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. The device usually displays the r…

Ring road

Ring road

A ring road is a road or a series of connected roads encircling a town, city, or country. The most common purpose of a ring road is to assist in…

Parking disc

Parking disc

Disc parking is a system of allowing time-restricted free parking through display of a parking disc or clock disc showing the time at which the …

Median strip

Median strip

The median strip or central reservation is the reserved area that separates opposing lanes of traffic on divided roadways, such as divided highw…

Jack

Jack

A jack is an object to lift heavy things with. A common use is to lift a car slightly to replace a wheel.

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