| Id Number | 264 |
| Object Title | Wet Compass |
| Manufacturer | BBT Doignon |
| Date of Object | May 6, 1955 |
| Model | 23.E.S |
| Serial Number | 20681 |
| Dimensions | 10.5 x 6 cm; 4'' x 6 1/4'' |
| Material | Metal; Glass; Alcohol |
| Id Number | 265 |
| Object Title | Frequency Meter |
| Manufacturer | Hewlett Packard |
| Date of Object | Unknown |
| Model | G532A |
| Serial Number | 1083 |
| Dimensions | 24 x 16 x 11 cm; 9 1/2'' x 6 1/4'' x 4 1/4'' |
| Material | Metal; Plastic |
| Id Number | 266 |
| Object Title | |
| Manufacturer | Unknown |
| Date of Object | Unknown |
| Model | Unknown |
| Serial Number | 14461 |
| Dimensions | 10 x 9.5 3 7/8'' x 3 3/4'' |
| Material | Metal |