In this paper we describe an experimental set-up in which a simple scanning photodiode array is used for display and the autocorrelation trace is shown on a conventional oscilloscope. The pulses come from a passively mode-locked Nd glass laser at 1.06um. After expanding and splitting, laser beams produce the noncollinear second harmonic (NSHG) in a LiIO3 crystal. According to the dependence of the duration of the fundamental frequency beam on the half width of the NSHG spatial intensity distribution in our ease, it has been measured that the average duration of the pulse train is (19+2) ps, a sharp peak of 0.4ps being superimposed on a broad background. This setup is of low cost and pratical. Some calculations dealing with the design and operation are given.