Fortunately, the multimeter is ... all valuable as well. While digital multimeters like the Fluke 115 (which the author has had in his toolbox for over 20 years), provide all the above features and ...
A tool like the Cen-Tech digital multimeter that Harbor Freight sells for $19.99 is essential for diagnosing ... and French and allows you to reset the check engine light when you're done scanning.