Home
About
Services
On-site training for Standards and Specifications
Scratch and Dig comparison standard certification
Expert witness and trial preparation
Savvy Optical Design and Consulting
Courses
Understanding Scratch and Dig
Advanced Surface Inspection Workshop
Understanding Waviness and Roughness
Modern Optics Drawings
Specifying Optical Components: A practical guide
Optical Design Mentoring
Other workshops
R Williamson Consulting
Products
Visual Inspection
SavvyInspector
Resources
Scratch and Dig Primer
ANSI and MIL Scratch and Dig Accumulator
ISO Dimensional Surface Imperfection Accumulator
Standards
Takaki and Aikens
Important Papers
Videos
Contact Us
Important Papers
Historic and Important papers
1968 Army correspondence
Click here for more information
New Options for Optical Quality Tolerances
cLICK hERE fOR mORE iNFORMATION
Traceability of Scratch Standards
cLICK HERE FOR MORE INFORMATION
Meaningful Roughness & Quality IODC (2010)
CLICK HERE FOR MORE INFORMATION
Truth about Scratch & Dig
CLICK HERE FOR MORE INFORMATION
Illuminance Study (2010)
CLICK HERE FOR MORE INFORMATION
Scratch & Dig Revisted (1986)
CLICK HERE FOR MORE INFORMATION
A Proposed Method of Specifying Appearance Defects of Optical Parts
CLICK HERE FOR MORE INFORMATION
The Scratch Standard is Only A Cosmetic Standard
CLICK HERE FOR MORE INFORMATION
MIL-PRF-13830B
Military Standard
CLICK HERE FOR MORE INFORMATION