Digital 3-Point Internal Micrometer Set

A water-resistant Mitutoyo bore gauge set comprising a digital/analogue display unit with interchangeable measuring heads, the appropriate setting rings, and an extension tube for deep-measuring applications. Suitable for measuring to the bottom of blind holes. Titanium-coated contact faces for enhanced durability. Digimatic data output.
Including box, key, 1 battery, setting ring, extension rod, certificate of inspection (inside micrometer only).
Individual ranges: 0.275-0.35", 0.35-0.425", 0.425-0.5".
Setting rings: .35" diameter & .425" diameter.