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High-Purity Aluminum Step Wedges

The High-Purity Aluminum Step Wedges are built to US Federal Specification GG-X-635C. The 07-456 determines mAs linearity, as well as contrast vs. kVp. On these high-purity aluminum step wedges, even numbered steps are identified with lead numerals.

Available in 11 steps and 21 steps, these step wedges are used for:

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

07-456 11 Step Wedge
Type-2024 Aluminum
07-456-1100 11 step Wedge
Type-1100 Aluminum
07-456-2100 21 Step Wedge
Type-2024 Aluminum
07-456-2111 21 Step Wedge
Type-1100 Aluminum

 

High-Purity Aluminum Step Wedge

SPECIFICATIONS
11 Steps Step Wedge

    2.50 x 5.50 x1.375 in
    Each step: 0.5 in surface; 3mm rise     Weight: 1.10 lb (0.50kg)
21 Steps Step Wedge
    3 x 10.3 x 1.85 in
    Each step: 12 mm surface; 2.1 mm     12 mm surface; 2.1 mm
    Weight: 3.20 lb (1345kg)