Classified into Controlled Waviness and Standard radius tools. By definition, waviness is defined by the amount of deviation from a true circle. For true accuracy, this needs to be measured peak to valley, and should be long, smooth and shallow. Contour measures peak to valley and does not measure average waviness, which is misleading and does not reflect the true radius shape.

Controlled Waviness Tools:
More expensive than non-controlled waviness tools, it is important to make the correct choice for the application. We offer a free service to assist in choosing the right tool. Guaranteed Waviness Values available:

• <1.0µm
• <0.75µm
• <0.5µm
• <0.25µm
• <0.15µm
• <0.1µm
• <0.05µm (less than 50 nanometers)

Standard Radius Tools:
Less expensive and higher waviness values than controlled waviness tools, they are suitable for applications where absolute accuracy is not required. Standard waviness ranges between 2 and 3 microns, and the edge is inspected to be chip free at x800 Nomarski. Standard tools can also be used in roughing operations.