| Material | Low Contrast coating on B270 |
| Overall Size | 1.97 in. dia. - 50mm dia. |
| Polarity | Positive (Contrast Set) |
| Resolution | 0.50 to 114 cy/mm |
| Elements | Group -1 Element 1 to Group 6 Element 6 |
| Contrast Value | Set of 4 (5.0% / 33.77% / 77% / 91.04% Contrast) |
