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An early surveyor's wheel depicted in the hand of late 18th century British road builder John Metcalf.. The origins of the surveyor's wheel are connected to the origins of the odometer.
A standard wire gauge. American Wire Gauge (AWG) is a logarithmic stepped standardized wire gauge system used since 1857, predominantly in North America, for the diameters of round, solid, nonferrous, electrically conducting wire.
A coordinate-measuring machine (CMM) is a device that measures the geometry of physical objects by sensing discrete points on the surface of the object with a probe. Various types of probes are used in CMMs, the most common being mechanical and laser sensors, though optical and white light sensors do exist.
There are two basic types of cased measuring tapes: spring return tape measures and manual return tape measures. While spring return tape measures are compact and self-retracting, manual return measures are designed for longer distances and often require manual winding, often via hand crank.
Length contraction was postulated by George FitzGerald (1889) and Hendrik Antoon Lorentz (1892) to explain the negative outcome of the Michelson–Morley experiment and to rescue the hypothesis of the stationary aether (Lorentz–FitzGerald contraction hypothesis).
Ammeter and Voltmeter on a power supply. Electrical measurements are the methods, devices and calculations used to measure electrical quantities. Measurement of electrical quantities may be done to measure electrical parameters of a system.
Measuring shaft of the nilometer on Roda Island, Cairo. A nilometer is a structure for measuring the Nile River's clarity and water level during the annual flood season in Egypt. [1]
Panjang may refer to: Lang Island a.k.a. Panjang Island, in the Sunda Strait between Java and Sumatra Panjang Island in the South Natuna Islands off western Borneo ( 02°45′N 108°55′E / 2.750°N 108.917°E / 2.750; 108