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The Steel Plug Gauge SPG Series is designed for precise Go/No-Go bore and hole measurement in industrial applications. Made from hardened, wear-resistant steel, these gauges provide reliable and repeatable inspection for critical components. Widely used in Singapore’s precision engineering, automotive, aerospace, and electronics industries, the SPG Series ensures fast and accurate pass/fail inspection on the shop floor. 

Product Overview:

• Excellent quality from reputable Japanese manufacturer. Material Steel for plug gauges, plug gauge holder made from aluminum.
• Consists of minimum and maximum limit sizes to test the compatibility of holes and widths with tolerance class of H7.
• Available in metric with custom sizes & tolerance grades on request for specific diameter checks during machining and assembly.
• You can also opt for carbide(TPG series) or ceramic(CPG series) for greater abrasion or heat resistance if required. 
• Pin vise can be purchased separately for use with your own pins.
• In addition, pin gauge sets for more general use or steel ring gauges for setting for bore gauges or 3 point micrometers are also available.

Typical Applications

• Bore diameter checks during machining and assembly

• Pass/Fail inspection of drilled, reamed, or ground holes

• Workshop and QA labs in high-precision industries

• Incoming inspection of components from suppliers

Why Buy Steel Plug gauge from Regional Tech?

• ✅ Free local delivery (conditions apply)
• ✅ Warranty-backed & authentic, beware of counterfeit products!
• ✅ Optional calibration certificate(ISO/IEC 17025) also available on request at additional cost
• ✅ After-sales support from our local technical team

For more info or price, click request for a quote to drop us an email!

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Niigata Seiki Co., Ltd. is a trusted Japanese manufacturer renowned for its high-precision measurement tools and inspection equipment. Founded in August 1960 with over 50 years of experience in metrology, they provide reliable, durable, and accurate instruments widely used across industries including manufacturing, aerospace, automotive, and calibration labs.