A fix frequency Oscillator for Bridge Experiments, workable on 220 Volts 50Hz. Giving variable output 0 to 10 Volts P-P at 1000 Hz. Accuracy +2% Output impedance 600 Ohms.      

Generates frequency from 1 Hz to 250 KHz in 5 steps wave form is Sine Square and Triangular. Output is variable from 0 to 10 Volts. Accuracy +3%  or 2 Hz. Output Impedance 50 ohms. Solid State. Workable on 220 V 50 Hz  Complete I.C Verson with coarse and fine controls for output and frequency slection .      
Dimension 11"x5 1/2"x5"

Variable from 1 Hz 1 MHz in five decade ranges Accuracy +2% or 1 Hz .       
Six steps output 1 mV to 20V open circuit, continously variable. Frequency response +0.3 db from 20 Hz to 20 KHz. Setting at KHz, 0-5 dB, 10 Hz to 100 KHz. Output Impedance 600 Ohms.The instrument is solid state and Workable on 220 Volts 50 Hz. Sine, Square waves, Read out Digital. Frequency       
meter can be used to read 10 Hz to 10 MHz and separate terminals in provided for that.       
Dimension : 13"x6"x5"

Variable 100 KHz to 30 MHz. The instrument is to deliver modulated output and continous wave form. The frequency range is covered in eight bands, Modulation  frequency is 400 Hz, and also available on output terminals.  Modulation depth 30% Accuracy 2%