As an engineer I used a multimeter everyday. The multimeter holds a special spot in the top drawer in my main toolbox and is still used for home projects. We want to teach addition and subtraction in 1st grade. We already know that Volts are a unit of measure for electricity. We know that if we connect a single 3 volt battery to a 5 volt light then it will glow dimly. We also know that if we add two 3 volt batteries together then the resulting 6 volts will make the light glow very brightly.
Today in 1st grade we used the multimeter to measure than same effect with an analog scale (a needle that moves to show what value we are reading on the multimeter). It does not matter if our students grow up to be biologists or finance executives. Everyone should be comfortable measuring and quantifying electricity. I learned how to use a Multimeter in high school. Some of us adults have never touched one. At St. Raymond’s we pick them up in 1st grade.