Wavetek 1910 Oscilloscope features Light intensity dial, horizontal dials for position and Gain, Vertical dials for Position (ch. A, ch. B), and Gain (V/DIV: 1, 0.1, 0.01 and 0.001) and Ch. A, Alt or Ch. B. Also a cable plug-in for Ch. A, Horizontal, and Ch. B. Backside has VERTMARKER input cable plug-in, size adjuster and +/- polarity. INTENSITY input cable plug-in and contrast adjuster. AUTO BLANK on/off switch and voltage selector. Unit powers up.