The General Electric RPX-052 is a variable reluctance cartridge with a replaceable and interchangeable stylus assembly, making adjustment and service a simple and convenient procedure. 33-45/78rpm
Most reproducer arms of current manufacture will accommodate the cartridge readily.
Resistance: 340 ohms
Inductance: 520 mH
Output: 10mV (columbia 10003M test record)
Stylus radius: 0.003 inch
Stylus pressure: 1/2 to 1 ounce
Data sheet