|Measure and Mark|
Level means perfectly horizontal relative to the earth’s gravity
O.C. or on center is even spacing of studs in a wall or other parts in a ceiling or floor by measuring to the center of each component.
Parallel is a term used to describetwo side by side lines that run the same direction and are exactly the same distance apart everywhere
Permanence is the state or quality of lasting
Plumb is the condition of being perfectly vertical relative to the earth’s gravity