/ Precision Measuring Tools / Precision Hand Tools / Micrometers / Micrometer Accessories / 247B * Not actual product image 51175 247B Micrometer Ball Attachments, .200" Diameter Balls 51175 Other similar products For 224A, 224AA and 436 Series Micrometers, .270" diameter Anvil and Spindle .270" Diameter Anvils. Features Specifications Contact Starrett Features Easily applied by snapping on to end of either anvil or spindle, thus permitting two attachments to be used together Balls are hardened, measure .200" in diameter, and move freely in the retainer, insuring positive contact with anvil and spindle Specifications : Diameter: .200" (5mm) Fits Starrett Series: For 224A, 224AA and 436 Series Micrometers, .270" diameter Anvil and Spindle