3M 26109, PPS Series 2.0 Adapter, Type S23, 1/4 Female, 18 Thread NPS, 7100135941 
Insize 2443-E8, BORE GAGE, .236-.315″, 6940561981087
$4,681.01
Accuracy (without dial comparator) 157uin
Repeatability (without dial comparator) 39uin
Applicable for .001″ ir .0001″ or .00005″ graduation dial indicators
Carbide contact points
Optional accessory: setting ring, bore gage setter
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