bids are invited for department energy band gap determination four probe method. , newtons ring experiment complete set , vernier caliper and stainless steel body , stainless steel body screw gauge type outside micrometer , pendulum bob , optical bench , centripetal force expt. , free fall apparatus with wireless photo gate and solenoid. , forced oscillation and resonance. , surface tension measurement , diode laser diffraction experiment , spherometer brass scale , 3mhz dds function generator , oscilloscope with probe, dual channel, latest technology , power supply dc 0-30v , lcr meter , compact benchtop lcr meter l and c and r test frequency 100hz - 25 khz and auto ranging and auto computing and functions , nanoammeter , gamma ray spectrometer and accessories with source. , abbes retractometer , ultrasonic interferometer for liquid and solid procurement of laboratory equipment for physics total quantity : 72