| Part No. | Type |
| 14680-A | Sextant model |
| 14680-B | Theodolite model |
| 14680-C | Optical square brass |
| 14680-D | Cross vertical staff brass |
| 14680-E | Model standard time indicator |
| 14680-F | Metal wired tape 15 meter |
| 14680-G | Rain gauge brass |
| 14680-H | Angle in a circle & its part |
Mathematics Learning Material
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