30Pcs Roughness Test Block, Surface Roughness Comparison Sample Block Ra0.05-12.5mm Roughness Sample Block w/32 Blades Feeler Gauge
Features:
The notebook sample block contains standards for the six most important processing methods among the popular "AA" values. All 30 samples were calibrated with uAA (arithmetic mean) and metric equivalent um Ra.
Multiple Roughness Grades-The standard set typically includes a range of samples with 30 levels of roughness,Each type of surface finish is a true and consistent reproduction, with a true idea of the feel, appearance and texture of machined parts.
Stability & Durability-These standard sets are made of 45# carbon structural steel which is stable and durable materials to ensure accuracy and reliability during long-term and repeated use.
Instrument Calibration-Surface roughness instruments (such as surface roughness testers) need periodic calibration to ensure the accuracy of their measurement results.
Warm Tips-In the use of the parts to be examined and should try to be in the same conditions, including surface color, lighting conditions.
Widely Used-It's not only to play a critical role in surface roughness measurement, quality control, and instrument calibration, but also be used as a visual teaching aid for mechanical majors in colleges and universities.
Package Includes:
1 set of 30 sample pieces Surface Roughness Comparison
1 set of 32 Blades Feeler Gauge 0.04-0.88 mm (0.0015-0.035 Inch)