Cathode-Ray Oscillograph Type 164-E

This is a vintage Allen B. Du Mont Laboratories Type 164-E Cathode-Ray Oscillograph (oscilloscope) from the late 1940s/early 1950s. It’s a classic 3-inch screen vacuum-tube model (uses a 3AP1 or similar CRT), designed as an affordable general-purpose bench scope for labs, radio/TV servicing, and education.
All major controls appear functional; no extra probes/cables included, overall solid and impressive piece. Does not power up when plugged in.