SPI 12 Piece Ultra Precision Angle Block Set

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.

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