| Clue | Source | Date |
|---|---|---|
| Drafting implement (Hyph.) | ||
| Ruler used in technical drawing for drawing horizontal lines (1-6) | ||
| Architect's ruler (1,6) | ||
| Drafting tool, and a feature found four times in this puzzle | LA Times Daily | 06 Dec 2024 |
| Device for use in geometry (1-6) | ||
| Drafting tool | Eugene Sheffer | 20 Oct 2023 |
| Instrument for drawing right angles | The Telegraph General Knowledge | 12 Sep 2021 |
| Instrument for drawing right angles | Irish Times Simplex | 17 Aug 2019 |
| Drafting tool | Eugene Sheffer | 07 Jul 2017 |
| Technical drawing tool | ||
| Draftsperson's device | ||
| Means of drawing a parallel | ||
| Drafting implement | ||
| Drafting implement | ||
| Drafting implement | ||
| Draftsman's tool (and a hint to this puzzle's theme) | ||
| Drawing board item | ||
| Drawing board item | ||
| Aid in drawing parallels? | ||
| Draftsman's tool | ||
| Draftsman's tool | ||
| Drawing-board staple | ||
| Drafting aid | ||
| Ruler of a kind | ||
| Artist's ruler | ||
| Drawing-board ruler | ||
| Draftsman's ruler. | ||
| Draftsman's adjunct. | ||
| Draftsman's gear. | ||
| Draftsman's tool. |