| Id Number | 300 |
| Object Title | Advertising Thermometer; Hygrometer |
| Manufacturer | Unknown |
| Date of Object | Unknown |
| Model | Unknown |
| Serial Number | Unknown |
| Dimensions | 15 x 3 cm; 6'' x 1 1/4'' |
| Material | Metal; Glass |
| Id Number | 309 |
| Object Title | Hair Hygrometer |
| Manufacturer | Ingraham |
| Date of Object | Unknown |
| Model | Unknown |
| Serial Number | Unknown |
| Dimensions | 13 x 3 cm; 5'' x 1 1/4'' |
| Material | Wood; Metal; Glass |
| Id Number | 312 |
| Object Title | Aspiration Type Assman Psychrometer |
| Manufacturer | Wilh. Lambrecht KG Gottingen |
| Date of Object | Unknown |
| Model | Type 761 |
| Serial Number | 340714 |
| Dimensions | 39.5 x 9 cm; 15 1/2'' x 3 1/2'' |
| Material | Metal; Glass |