The digital multimeter, DMM, is one of the most common items of test equipment used in the electronics industry today. While there are many other items of test equipment that are available, the multimeter is able to provide excellent readings of the basic measurements of amps, volts and ohms.
Here are the basics of the rules, which will apply to drones weighing fewer than 55 pounds: pilots will have to pass a knowledge test (but not a practical test) to get a newly developed drone operator license and will have to be vetted by the TSA.
Today drones are no longer only operated by the military, with smaller versions used for all sorts of purposes by companies and individuals. For example, Amazon and Google say they are developing drones that deliver parcels. Facebook wants to fly giant drones that can carry internet signal to remote areas.