9. shot (n.) a consecutive series of pictures that constitutes a unit of action in a film
The vacuum level is determined by the pressure differential between the evacuated volume and the surrounding atmosphere. Several units of measure can be used. Most refer to the height of a column of mercury â usually inches of mercury (in.-Hg) or millimeters of mercury (mm-Hg).
We will practice the throttle snap test in the lab. Any time you use a vacuum gauge, begin by paying attention to how much vacuum is present in an engine that is cranking. A vacuum gauge is one of the best ways to test for sufficient compression on an engine that will not start.