SPI 12 Piece Ultra Precision Angle Block Set – 30-139-0

0.25 to 30 Angle, 3 Inch Long, Angle Block Set
0.0001 Inch Per Inch, 30 Arc Seconds Accuracy, 45-50 Rc Hardness, 12 Pieces

Features:

• 3″ long and 1/4″ thick.
• Angular accuracy within 0.0001″ per inch ( 30 arc seconds)
• Angles included are 1/4, 1/2, 1, 2, 3, 4, 5, 10, 15, 20, 25 and 30.
• Plastic case included.