High Frequency Voltmeter, Laboratory reference
Voltage: 15Vpeak, 10Vrms  
Accuracy / Frequency: 0.2% to 500kHz, 0.5% to 1MHz

Intended for as a laboratory reference with exceptionally high accuracy up to 500kHz range. Voltage range designed to be compatible with function generators and signal circuits operating from +/-15V power supplies.  

Detailed Specifications                                        Operation Manual