5886-C/ Buttress Thread Depth Gauge, External and Internal: For sizes 4 1/2″ through 13 3/8″. Anvil extends to front of indicator, permitting thread depth to be measured near the center of the coupling. Use with 1233-A Setting Standard.
5886-B16/ Buttress Thread Depth Gauge: For sizes 16″ and larger. Anvil is .400″ long with .0084″ step on one side. Use with 1233-SB16 Setting Standard.