| Id Number | 67 |
| Object Title | Wet/Dry Bulb Hygrometer |
| Manufacturer | Taylor |
| Date of Object | 1956 |
| Model | Unknown |
| Serial Number | Unknown |
| Dimensions | 22.5 x 10.75 x 3 cm; 8 3/4'' x 4 1/4'' x 1 1/4'' |
| Material | Plastic; Glass; Mercury |
| Id Number | 68 |
| Object Title | Assman Psychrometer |
| Manufacturer | Sato Keiryoki Mfg. Co. Ltd. Japan |
| Date of Object | November, 1986 |
| Model | Unknown |
| Serial Number | 7380 |
| Dimensions | 40.5 x 10 cm; 16'' x 4'' |
| Material | Metal; Plastic |
| Id Number | 69 |
| Object Title | Mill Hygrophant |
| Manufacturer | Casartelli |
| Date of Object | 1840 |
| Model | Unknown |
| Serial Number | 8652 and 21633 |
| Dimensions | 41.5 x 19.5 x 8 cm; 16 1/4'' x 7 3/4'' x 3 1/4'' |
| Material | Wood; Metal; Ceramic; Glass; Paper |