Miscellaneous
Hand Operated Vacuum Pump
The Hand Operated Vacuum Pump is used with the Michelson Interferometer to measuring the index of refraction of air.
This Hand-Operated Vacuum Pump with Gauge is required to measure the index of refraction of air using the Introductory Michelson Interferometer.
https://www.pasco.com/products/lab-apparatus/light-and-optics/advanced-optics/os-8502#specs-panel