Series 511 - Bore Gage-Blind Holes-8mm-No Cover Roughing End Mills and the chip groove is

and the chip groove is left-handed

Inch models have a graduation option of

Used with hydraulic chuck to realize flexible clamping range

High-Performance Solid End Milling

Series 511 - Bore Gage-Blind Holes-8mm-No Cover Roughing End Mills and the chip groove isFeatures & Benefits The Mitutoyo blind hole bore gage is ideal for measuring the inner dimensions at the bottom of blind bores and holes. Interchangeable anvils constructed of alloy steel allow for measurements in various ranges of bore diameters. A pendulum guide structure permits the slide of the gage for easier measurements without sacrificing accuracy. A two point contact system detects geometry anomalies such as ovalness and taper. Does not