Portable yet Powerful, the 7261A Universal Counter/Timer measures frequencies to 125MHz while offering good resolution accuracy. Incorporates a 100MHz clock providing 10 ns resolution! Makes time-interval or single-period measurements and will average from 100 to 105 such measurements per reading when greater resolution or accuracy is desired. That extends the resolution to 31.6 pS! 1X, 10X, or 100X selectable attenuation and a switchable 100kHz low-pass filter are also provided. A great little Counter/Timer put one to work for you!