| Rating | Solver | Clue |
|---|---|---|
| DEGREE | Temperature unit | |
| CALORIE | The unit of heat according to the French standard; the amount of heat required to raise the temperature of one kilogram (sometimes, one gram) o... | |
| VOLT | ...o-motive force of a standard Clark's cell at a temperature of 15¡ C. ... | |
| OHM | ...electric current by a column of mercury at the temperature of melting ice 14.4521 grams in mass, of a constant cross-sectional area, and of the ... |