The multitester, also known as the multimeter, seems to have been invented by Donald Macadie, a British Post Office engineer.
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an inventor is a designer but a designer is not an inventor
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The possessive form of the noun inventor is inventor's.Example: The inventor's patent was finally granted.
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http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=12&f=G&l=50&co1=AND&d=PTXT&s1=multitester&OS=multitester&RS=multitester
They are easier to read.
the multitester and its parts
The black probe is negative.
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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.
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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.
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