| measure angle | 0.68 |
| allow for more range | 0.35 |
| come complete | 0.32 |
| powered by two standard… | 0.25 |
| measure angular distance | 0.25 |
| allow direct observatio… | 0.25 |
| read to 90° | 0.25 |
| come with beautiful fel… | 0.22 |
| four index shades | 0.35 |
| ribbed brass index arm | 0.30 |
| old fashioned | 0.25 |
| functional | 0.16 |
| instrument | 0.44 |
| reflecting navigation i… | 0.30 |
| device | 0.25 |
| used to measure lunar d… | 0.48 |
| assembled | 0.41 |
| held | 0.38 |
| made under license | 0.35 |
| painted | 0.34 |
| tested in clean, profes… | 0.30 |
| manufactured | 0.30 |
| maintained | 0.25 |
| marked with unique seri… | 0.25 |
| navigation | 0.25 |