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Video signal generator: Generates video signal for testing purposes Voltmeter: Measures the potential difference between two points in a circuit. (Includes: DVM and VTVM) VU meter: Measures the level of AF signals in Volume units Cathode Ray Oscilloscope (CRO) Check transistor
The development of precision probes dates back to the 1920s with different mechanical touch devices, but significant advancements came with the advent of Coordinate Measuring Machines (CMM) in the late 1950s. This led to the creation of contact and non-contact probes, including mechanical triggers and scanning probes, as well as laser and ...
A measuring instrument for radio waves: the 64-meter radio telescope at Parkes Observatory, Australia, as seen in 1969, when it was used to receive live televised video from Apollo 11. Considerations related to electric charge dominate electricity and electronics. Electrical charges interact via a field. That field is called electric field.If ...
Standardized measurements are essential to technological advancement, and early measurement tools have been found dating back to the dawn of human civilization. [1] Early Mesopotamian and Egyptian metrologists created a set of measurement standards based on body parts known as anthropic units. These ancient systems of measurements utilized ...
a device used for measuring holes. Hole gauge [3] used to gage internal dimensions of bores that are either too small in diameter for an inside micrometer, and have greater economy than a bore gage or other precision internal gage. Caliper: a device used to measure the distance between two opposing sides of an object. Center gauges and fishtail ...
With a laser measuring tool, the job can be completed by one operator with just a line of sight. Although tape measures are technically perfectly accurate, laser measuring tools are much more precise. Laser measuring tools typically include the ability to produce some simple calculations, such as the area or volume of a room.
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The following is a topical outline of the English language Wikipedia articles on the topic of metrology and measurement. Metrology is the science of measurement and its application. Metrology is the science of measurement and its application.