Ultrasonic diffraction apparatus abron ae-1442  The instrument is designed to give accurate and best results keeping in view the various difficulties faced by the institutions. A proper R. F. Oscillator is designed for this experiment and special type of High Resolving Spectrometer with Micrometer Eyepiece in manufactured for this experiment. It is fully tested and nice fringes are formed with the help of R. F. Oscillator. Specifications R. F. Oscillator Input :  230 Volts AC 50 c/s Frequency :    2.5 - 6.5 Mc/s calibrated for different set of crystal frequencies and is continuously variable. R. F. Output :      The output is brought out on the terminals. Built-in a nicely polished box with ON / OFF switch, jewel light etc. Leads : Connecting leads are provided with the instrument.