The Nucleus Model 575 SCALER-RATEMETER is a precision medical and lab equipment device manufactured by The Nucleus Inc. This scaler-ratemeter is designed to accurately measure and display the rate of ultrasonic scalers in dental and other medical applications. The compact design and reliable performance make it an essential tool for professionals in the healthcare and lab industries. UNIT HAS COSMETIC DAMAGE, SCRATCHES, MARKS, MISSING PAINT. SEE PICTURES FOR COSMETIC CONDITION.