Manufacturer: Heathrow Scientific
| Item No. | Brix Range | Subdivision | Length |
| 6601-1 | 0 to 12° | 0.1° | 13 in. (330 mm) |
| 6601-2 | 9 to 21° | 0.1° | 13 in. (330 mm) |
| 6601-3 | 19 to 31° | 0.1° | 13 in. (330 mm) |
| 6601-4 | 29 to 41° | 0.1° | 13 in. (330 mm) |
| 6601-5 | 39 to 51° | 0.1° | 13 in. (330 mm) |
| 6601-10 | 0 to 35° | 0.5° | 13 in. (330 mm) |
| 6601-11 | 35 to 70° | 0.5° | 13 in. (330 mm) |
| 6601-13 | -5 to 5° | 0.1° | 13 in. (330 mm) |
| 6601-14 | 5 to 15° | 0.1° | 13 in. (330 mm) |
| 6601-15 | 15 to 25° | 0.1° | 13 in. (330 mm) |
Manufacturer Part Number/SKU: 6601-2-EA
Tags: Heathrow Scientific