Final answer:
In the context of a gear drive, the alignment or meshing of gears is accomplished through the use of a straight edge or a length of string.
Step-by-step explanation:
In the context of a gear drive, the alignment or meshing of gears is accomplished through the use of a straight edge or a length of string. By placing a straight edge or string along the teeth of the gears, you can ensure that the gears are properly aligned and meshing smoothly.