Sparkfun Digital Multimeter: Amazon.com: Tools & Home Improvement
Et828 2 In 1 Oscilloscope Multimeter Digital 1mhz 2.5msps Color Screen Dc/ac Current Voltage Resistance Frequency Diode Test - Multimeters - AliExpress
SparkFun Inventor's Kit for Arduino Uno - v4.0 - RobotShop