_:n954e90603ce449d28de398bf847b32c6xb8
<http://schema.org/description>
"cessory Set for the InterferometerThis accessory set for the interferometer U10350 consists of a vacuum cell for determining the refractive index of air and a glass plate on a rotatable holder for examining the surface quality of optical components (Twyman-Green interferometer).Additionally required: U20500 Vacuum Hand Pump U10146 Silicone Tube"
<https://mansionhealthselect.com/hot-therapy-therapy-fitness-hot-cold-therapy.html>