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Step Wedge / Penetometer

Available in 11 steps, these two wedges are used for:

• Darkroom fog testing
• Fil and screen comparison
• Technique chart development

The aluminum step wedge/penetrometer determines mAs linearity, as well as contrast vs. kVp. part number 608111 includes a "lead plug" marker at the fourth step used as an alignment reference while 608110 includes lead numerals, 2 through 10, to indicate each even numbered step.