Manufacturers Of Thread Ring Gages & Thread Plug Gages, Furnished In Hard Chrome. English & Metric; Steel & Hard Chrome; Special Thread Gages Including Acme & Buttress. Taper Pipe & Straight Pipe Thread Gages. Cylindrical Plain Plug & Ring Gages. Capacity Size Range To 15"-Design & Build Special Thread Gages To Customer Specifications, NIST Traceable With Complete Gage Lab