Course info

Marking and inspecting perpendicular and angular surfaces is critical to produce quality products. Precision instruments called squares and protractors are used extensively to ensure squareness and accurate angles. In this course, you will gain the mastery required to accurately measure with squares and protractors.

Learning Objectives

• List the parts of a solid square
• List the parts of a combination square
• Use a solid square to mark perpendicular lines
• Use a center head to find the center of a round part
• Use a combination square to measure and mark lines
• Use a protractor head to mark angular lines