Anyone know what this is?via Synthesizer-Magazin.
Update via cornutt in the comments and confirmed by Moogulator: "I see a Pasco logo at the bottom right. Pasco Scientific makes instruments and lab equipment for classroom use. They've got some interesting things on their Web site like lab power supplies, function generators, ripple tanks, and decade boxes. This box was probably used with a scope to teach students about Fourier analysis and sum-of-sines."













































