The Potentiometer Radio Type, also known as a Rheostat, is a versatile tool commonly used in electrical and electronic experiments. Housed in a durable, transparent container, this device allows for observation by students. Variations in resistance levels are determined by whether the device is Wire Wound or made from Carbon tracks. It is designed for use in the hands of students and is tough and long lasting. Read Instruction Sheet Dimensions: 75mm (L) x 75mm (W) x 42mm (H) Weight: 0.08 kg Brand: IEC Product Code Type Ohms SE.EM2490-001 Wire Wound 20 SE.EM2490-003 Wire Wound 50 SE.EM2490-005 Wire Wound 100 SE.EM2490-010 Wire Wound 1K SE.EM2490-012 Wire Wound 5K SE.EM2490-015 Wire Wound 10K SE.EM2490-018 Carbon 25K SE.EM2490-020 Carbon 50K SE.EM2490-025 Carbon 100K