My first isometric hand sketch with center lines.

These tools were made in the first course of the Level I Machine Tools Program at Fullerton College. It includes the following: soft center, vise stop, stainless steel tap center, and aluminum scribe.

In this view, located in the center of this device, is the adjustment screw. It has 25 markings where each marking represents "one thou" or one-thousandth of an inch.