combination square

noun

: a measuring tool consisting of a steel rule that slides through an adjustable protractor head or level or a center head which can be fixed at any point on the rule by a lock bolt and being usable as an inside or outside try square, a marking or depth gauge, level, miter square, plumb, and straightedge

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now