• Plain plug gauges are designed to check the internal diameters of holes, bores, or other cylindrical openings.
• They ensure the hole falls within specified tolerance limits, which is essential for parts that require precise fitment and alignment in assemblies.
• The gauge consists of two functional ends:
  • "Go" End: This side is designed to fit into the hole if the hole is within or slightly larger than the minimum size tolerance.
  • "No-Go" End: This side should not fit into the hole if the hole is within or slightly smaller than the maximum size tolerance.

• Manufacturing : Used to inspect parts in industries like automotive, aerospace, machining, toolmaking, and electronics.
• Quality Control : Plug gauges ensure fitment accuracy, critical in applications where a part must interact with other components.
• Tool Rooms & Workshops : They are indispensable in tool rooms for checking the accuracy of bores during the production of dies, molds, and jigs.
• Maintenance : Used during preventive maintenance to ensure that the machinery or components are still within operational tolerances.