The ELECTROGLAS 4090u Automatic Wafer Prober is a used semiconductor probing system designed for high-performance wafer testing in production and R&D environments. Recognized for its speed, accuracy, and reliability, the 4090u model supports a wide range of wafer sizes and testing requirements. With advanced automation features, precision motion control, and compatibility with various test platforms, the 4090u remains a trusted solution in wafer-level electrical testing. It is ideal for fabs and test labs needing dependable probe card alignment and efficient throughput.