Vintage Bronwill Biosonic III Ultrasonics Oscillator Model III Sonicator with extra parts?

From the estate of a scientist that worked at the National institute of Health for many years and had some very high end equipment, this unit is from an NIH auction years ago that the lab scientists had access too so they could do further work in home based workshops, It appears to be in nice condition for the age but I do not know if it is working or its internal condition,sold as is for parts or projects, based on the age I am sure it will need to be disassembled and cleaned for use, sold as is -no returns, please see pics