Johnson Gage Internal NPT Segments replace the L1 and L3 Plug Gage Limit method of inspection. The Segment Gage will provide actual measurements of the Size and Taper of an Internally tapered threaded component. Data can provide actionable information for many places in your product cycle: cost effective and operator friendly machine set up, process control, form analysis, pre and post plate manufacturing guidance or quick and repeatable conformance, receiving or final inspection.
As the industry leader in Thread Gage Design & Manufacturer, Technical Education, Lab and Inspection Services, Johnson Gages are available in single size or adjustable ranges, external or internal threads, bench or portable styles. We provide gaging for UN, UNJ, Metric, Metric J, ISO, Tapered, Acme, and Buttress thread forms. System extensions include runout and concentricity. Available in Analog and Digital output.

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