O-10 Push-Pull Oscilloscope. 11 tubes. Broadband ampss for color TV servicing. Vertical frequency response within 5db from 5 Hz to 5 mHz. Response down less than 1.5db @ 3.58 mHz (color sync burst frequency). Printed circuits. New sweep circuit,linear from 20 Hz to more than 500,000 Hz. Built-in 1-v peak-to-peak reference for calibrating plastic CRT faceplate. 5UP1 CRT. Push-pull horizontal & vertical deflection amps. Horizontal trace expendable to 3X CR tube diameter, allowing examination of small parts of signal. 0.025v/inch deflection sensitivity. Frequency compensated step attenuator @ vertical input. Charcoal gray panel. New wide band model. Shipping weight 27 lbs. Price in 1955: $69.50.