| Answer | Crossword Clue |
|---|---|
| MOHS | Geologist who named a scale |
| MOHS | German geologist who gave his name to a hardness scale |
| VERNIER | Scale named for a French mathematician |
| MOHS | Mineralogist for whom a scale is named |
| LYELL | Geologist who was a colleague of Darwin |
| CELSIUS | Swede who developed a temperature scale |
| MOHS | Mineralogist who developed a hardness scale |
| PIANOTUNER | One who works on a grand scale? |
