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The multitester, also known as the multimeter, seems to have been invented by Donald Macadie, a British Post Office engineer.
They are easier to read.
the multitester and its parts
The black probe is negative.
AMBOT!
by using multitester
Turn the dial to the omega symbol.
By using a Multitester.
Donald Macadie, post-office engineer, invented the first multimeter in the 1920's. The original multimeter could measure volts, amperes and ohms.
Go to highest scale on AC range
A multitester scale refers to the range of measurements that a multimeter can make, such as volts, amps, and ohms. It provides a set of divisions for each unit of measurement that allows users to accurately read the values being measured. Different multitesters have different scales to accommodate various ranges of measurements.