Pistol grip 3- point bore gauge, spherical anvil heads;, Range: 6- 10 mm as per attached specification, Pistol grip 3-, point bore gauge, spherical anvil heads; Range: 10- 20 mm, as per attached specification, Pistol grip 3- point bore, gauge, spherical anvil heads; Range: 20- 100 mm as per, attached specification, spherical anvil heads; Range: 100- 300 mm as per