Digital ABS Borematic (Internal) Inch/Metric, 76.2-101.6mm/3-4", Complete Set 568-969

This is a Three-Point Digimatic Snap Open Bore Gauge Set with a display unit for each measuring head.
It offers you the following benefits:

• It enables you to take measurements easily and quickly.
• Titanium-coated measuring pins gives you excellent durability and impact resistance.
• 330° rotatable display unit also gives you easy reading at any
  angle.
• GO/NG tolerance judgement function.