These rulers were designed to give the photographer and the developer the ability to have a scale for small items that need a clear scale for development. The white metric corner square includes an 18% gray half tone and is commonly referred to as an ABFO #2. These rulers are magnetic. 

Specifications

  • Weight:0.05 LBS
  • Width:4.50 (in)
  • Height:0.13 (in)
  • Depth:4.50 (in)