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FEATURES of 490  digital protractors

  • This protractor provides an immediate digital reading of any angle in a full circle with 0°-90°-0°-90°-0° readings. The machined Aluminum frame is rigid and light with a precise platform that allows the sensor and its microprocessor circuit to provide high accuracy throughout the entire 360° range
  • Four 90° quadrants for display purposes
  • Calibrates in minutes without any special fixtures
  • Hold button for freezing a reading in an unreadable position
  • ABS/ZERO button allows 2 measuring modes, standard and alternate reference
  • V-grooves on top and bottom for use on curved surfaces
  • Automatic On/Off to maximize battery life
  • Angle displayed upright regardless of protractor position
  • Item #490-16-2 comes with magnet on base, which is helpful for fixing
  • Weight: 343g
  • Power: 3V, Lithium cell