EICO Model 377 Sine/Square generator Uses Wien-Bridge oscillator with 1% resistors. Sine waves: 20kHz to 200kHz in 4 bands, +- 1.5db from 60 to 150,000 cps with less than 1% distortion. Square waves: 60kHz to 50kHz in 4 bands with 5% tilt at 60cps, 5% rounding at 30,000cps. Output: 10 volts across 1,000 ohms. 6.5 inch vernier calibrated dial. Calibration accuracy +-3% or 1cps. Hum under 0.4%. Cabinet Size: (HWD) 7 1/8" X 11 1/8" X 7 5/8" Weight: 14 lbs $31.95 (1962) $39.95 (1970)