STARRETT Optical Polygon / Model: OP 12.0

Webber Optical Polygons provide an easy, accurate method of checking and calibrating angles. They are designed for use with autocollimators in measuring angle spacing. The exclusive one-piece design provides compact, fixed master for precise angle spacing

Specifications

• Made in America: No
• Number of Sides: 12
• Angle Spacing Degrees: 30
• Accuracy Grade: 0

• Target faces are highly reflective and optically flat.
• Chrome carbide polygons provide a hardness of Rockwell 71-73 C
• Corrosion resistance 10-20 times that of 18-8 stainless steel
• Lifetime accuracy
• Maintenance problems are virtually eliminated
• 1'' mounting hole, flanged bushing, lapped washer and hold-down bolt furnished with each unit
• Furnished in case
• Certificate of Calibration included