Refrigeration Manifold Gauge

refrigeration
the process of cooling or freezing (e.g., food) for preservative purposes
deliberately lowering the body's temperature for therapeutic purposes; "refrigeration by immersing the patient's body in a cold bath"
(refrigerant) any substance used to provide cooling (as in a refrigerator)

manifold
(in an internal combustion engine) The part conveying air and fuel from the carburetor to the cylinders or that leading from the cylinders to the exhaust pipe
make multiple copies of; "multiply a letter"
a pipe that has several lateral outlets to or from other pipes
Something with many different parts or forms, in particular
many and varied; having many features or forms; "manifold reasons"; "our manifold failings"; "manifold intelligence"; "the multiplex opportunities in high technology"
A pipe or chamber branching into several openings

gauge
An instrument or device for measuring the magnitude, amount, or contents of something, typically with a visual display of such information
a measuring instrument for measuring and indicating a quantity such as the thickness of wire or the amount of rain etc.
A means of estimating something; a criterion or test
estimate: judge tentatively or form an estimate of (quantities or time); "I estimate this chicken to weigh three pounds"
A tool for checking whether something conforms to a desired dimension
accepted or approved instance or example of a quantity or quality against which others are judged or measured or compared