Simpson 400 Hertz 120v Analog Meter Demo with IG-82 AG-10 Heath Signal Generator Vintage Tools

Using the Heath IG-82, which shares the same setup as the Heath AG-10 sine and square wave generator, you can see the Simpson 3-711304 Four Hundred Hertz (400Hz) frequency meter show is working movement.
From the signal generator to the analog frequency meter a twisted pair of solid core 22 gauge white was used with diesel alligator clips on one end and banana twist on jacks on the test set side.
The tiny handheld oscilloscope is a knock off DSO-150
"Watch out the fake DSO".