| Main Entry: | ruler |
| Part of Speech: | noun |
| Definition: | tool for measuring or calculating length |
Synonyms: |
T-square, folding rule, measure, measuring stick, rule, slide rule, straightedge, yardstick |
| Main Entry: | T square |
| Part of Speech: | noun |
| Definition: | carpenter's tool |
Synonyms: |
carpenter's square, square, try square |