The Model 430 is a general purpose 3-inch CRT Oscilloscope employing advanced, high- quality circuit techniques refined through many years of continuous oscilloscope development work at EICO. Despite its small size, the Model 430 has the control facilities and performance quality demanded in general laboratory work, production testing, service work, ham shacks, and home work shops. Its compact size makes it easy to place conveniently on any bench; rugged mechanical construction and light weight makes it truly portable. 1-1. FEATURES 1. Compact, lightweight design. Fits on any bench, goes anywhere. 2. Flat-face CRT gives full utilization of face area. 3. Mu-metal CRT neck shield minimizes effects of external fields. 4. Intensity and focus controls plus astigmatism adjustment. 5. 4-range sweep generator covers 10 cycles to 100, 000 cycles. 6. VR-tube regulated power supply for stable, drift-free operation. 7. 1500 volts high-voltage supply for sharp, bright trace. No blooming. 8. Direct connections to vertical deflection plates for easy transmitter modulation monitor ing. 9. Full retrace blanking and fully automatic sync. 10. Removable green filter easily snaps into the front of the plastic bezel.