3M 26018, PPS Series 2.0 Adapter, Type S11, 3/8 Male, 18 Thread NPS, 7100135942 
Insize 4799-180, PROTRACTOR, 3.1×4.7″, 0-180?, 6928640317392
$35.08
Graduation 1?
Made of stainless steel
Satin chrome plated scale.
With clamping screw.
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