One-way Thread Gauge 2→1
  For metric threads Thread plug gauge made of tungsten carbide (half-type)
  For metric threads Thread ring gauge made of tungsten carbide (half-type)
  For metric threads Thread plug gauge made of ceramics (half-type)
  For metric threads Thread ring gauge made of ceramics (half-type)
  Steel thread plug gauge for metric threads
  Steel thread ring gauge for metric threads
  Steel thread plug gauge for unified threads
  Steel thread ring gauge for unified threads
  Steel thread plug gauge for straight pipe threads
  Steel thread ring gauge for straight pipe threads
  Steel thread plug gauge for taper pipe threads
  Steel thread ring gauge for taper pipe threads
  Thread Position Alignment Gauge Pos-T