| Answer | Crossword Clue |
|---|---|
| OCULAR | Part of an optical instrument. |
| LENS | Optical-instrument part |
| EYEPIECE | Optical-instrument part |
| RETICLE | Grid in the eyepiece of an optical instrument |
| LENSED | Describing an optical instrument. |
| DIAL | Part of an instrument panel. |
| UTUBE | Part of an instrument measuring fluid pressure |
