This SL-200K electric propeller shaft revolution indicator is a marine-grade instrument designed for monitoring ship propeller speed and direction (ahead/astern). With a 0-100 RPM range and 10V/5mA signal input, it provides clear visual feedback for engine room and bridge control systems. Built to JIS F 8521 standards, it is robustly constructed to withstand marine conditions, ensuring reliable performance for vessel propulsion monitoring.
