My first serious scope was the Philips PM 3260 dual-trace 100MHz unit above. It's what we used to call a portable scope. And why not? It's got a handle. As you can see, there's nothing overly fancy ...

Even though the dual-trace oscilloscope goes back to 1938, they were uncommon and expensive for many years. [Mr. Carlson] found a device from 1939 that would turn a single channel scope into a ...

This arrangement also grants designers certain advantages over purchasing a specialized dual-trace oscilloscope with ... A 10-MHz Philips PM3230 (main) and a 15-MHz Tektronix 515A (de-layed ...

Equipped with a high-brightness CRT, the Model 6030C dual-trace analog oscilloscope from Protek comes with a pushbutton-activated component tester for checking inductors, capacitors, and diodes via a ...