21 step aluminium wedge for determination of the dose reproducibility and sensitometric curve shape, speed and mid-gradient of X-Ray screen-film radiography systems.
- Dimensions: 231 x 110 x 31.5 mm
- 21 steps with a width of 11 mm
- 1.5 mm graduation per step
- Made of a highest purity aluminium
- Copper numbers marking each step
- Other sizes of step wedges upon request
