The Tool Barn

Name:  Combination Square, "Tri" Square

Use:  A very versatile tool that can do many things.  Used to determine if a joint or wall is square (90 deg), flat (180 deg) or at a 45 degree angle.  Can also be used to check for level, scribe lines and measuring.  Do not confuse this with the much larger carpenters square.  The carpenters square is much larger and produces more accurate results but is not as versatile.

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