1. Measurement Capabilities: The LR-1A Is A Microcontroller-Based Meter That Utilizes A True Four-Wire Kelvin Measurement System To Eliminate Lead Resistance Errors. It Measures Resistance From 1 Micro-Ohm To 10 Ohms Across Four Distinct Ranges With A Basic Accuracy Of 0.2 Percent And A Fast 4-Second Measurement Time.