Indium sealed, strain relief cold windows
Radiation shield cold windows
50/25-ohm heaters on vaporizer heat exchanger/sample mount
Helium valve
Instrumentation feedthrough on cryostat body
8-pin & 10-pin electrical feedthroughs on sample positioner
Optical or blank sample holders
Standard silicon diode control thermometers
Isothermal zone sample tube (provides uniform sample temperature and enhanced operation with LN2) LHe and LN2 level indicator
Multipin and coaxial electrical connectors
Additional temperature sensors and controllers
Alternative window materials
10-pin electrical feedthrough on cryostat body
Universal joints for sample positioners
Custom sample holders
Bottom looking optical access 
