S-Series II Features • 4.8sq.in Circular Viewing Window • Self Contained Internal Micro-Processor • Excellent Stability, Linearity & Resolution • Long-Life Solid State Illumination • Fully Automated Calibration • Durable Synthetic Calibration Standard • Calibration Flexibility • High Contrast Backlit LCD Display • Super-Regulated & Isolated Internal Power Supply • Sturdy Construction Suitable for the Production EnvironmentAGTRON