A method of measuring pulse voltages up to 10 kV at a frequency of 200 Mc/s is described. The voltage to be measured is applied to one end of a three-quarter wavelength line, short circuited at the other end. The sinusoidal distribution of voltage thus set up is used as a potential divider, the voltage at a small, known distance from the voltage node being measured with a valve peak-voltmeter. A method of eliminating the input capacitance of the valve voltmeter is described. Possible sources of error are discussed and their magnitude is estimated.