WebAug 1, 2009 · Using the paddle, any defect is defined by a scratch number followed by the dig number. This standard was developed during World War II from Frankford Arsenal in Philadelphia, PA, and is based on the appearance of a scratch. Because different scratch structures could have the same appearance, it is difficult to determine the physical size of ... Web#53-197 - Scratch and Dig Paddle Discontinued. Please review the similar products below or contact us for further assistance determining replacement products. Sales & Expert Advice or view regional numbers LIVE CHAT EMAIL. Easy …
Scratch and Dig Paddle (or similar tool) - LinkedIn
WebScratch number- 10, 20, 40, 60, 80 Dig value – continuous from 5 to 70 ISO Grade – 0.063 to 0.63 Per MIL-PRF-13830B and ANSI/OEOSC OP1.002, visibility method ISO 10110-7 general and coating imperfections only WebObjective Measurement of Scratch and Dig David M. Aikens Author Information Find other works by these authors Optical Fabrication and Testing 2012 Monterey, California United States 24–28 June 2012 ISBN: 1-55752-947-7 From the session Optical Testing II (OTu2D) Not Accessible Your library or personal account may give you access Get PDF Email Share black hills trimlight
Inspection Tools - Thorlabs
WebImplied Scratch Number Specifications A dig is any pit-like hole in the surface. They are usually round in shape. The dig specification defines the maximum allowable diameter of any dig in the surface. In the case of irregular shaped digs, the average diameter of shape is used Typical Dig size is 0.05mm-0.5mm Digs WebDIG A dig is a round pit or mark, including a bubble. Dig is a bit more quantitative because it is the approximated by the diameter of a “dig”. If the dig is not perfectly round, then the dig value is the average of the length and width. As with the scratch designation, there are more details in MIL-PRF-13830B such as “the total WebIt displays the Scratch-Dig designations by a letter with the scratch width dimensions and the dig diameter shown in micrometers. The standard is provided as shown below. We also offer the standard with an optional … black hills trails sd