Introducing the Thread Checker Screw Measurement Ruler – a precision‑engineered, stainless‑steel caliper designed for effortless measurement of screw pitch, bolt threads, and nut dimensions. Whether you’re a professional machinist, a DIY enthusiast, or a hobbyist, this metric gauge tool delivers accurate, repeatable results every time.
Key Highlights
- High‑grade stainless steel construction for superior durability and corrosion resistance.
- Metric gauge scale (0‑30 mm) with clear, laser‑etched markings for quick reading.
- Integrated caliper jaws allow direct measurement of thread pitch, major & minor diameters.
- Compact, lightweight design fits comfortably in any toolbox or pocket.
- Universal compatibility – ideal for screws, bolts, nuts, and threaded rods across automotive, electronics, and woodworking projects.
Why Choose This Thread Checker?
Accurate thread identification saves time and prevents costly mistakes. Our stainless‑steel ruler combines the reliability of a professional caliper with the convenience of a handheld gauge, ensuring you can:
- Identify the correct replacement screw or bolt in seconds.
- Verify thread pitch before ordering custom fasteners.
- Maintain consistent quality in production or repair work.
- Reduce wear on tools with a rust‑proof, long‑lasting surface.
Specifications
- Material: 304 Stainless Steel
- Measuring Range: 0 – 30 mm (1.18 in)
- Scale Type: Metric (mm) with dual‑side engraving
- Overall Length: 150 mm (5.9 in)
- Weight: 45 g (1.6 oz)
How to Use
1. Open the caliper jaws and place the screw, bolt, or nut between them.
2. Align the measurement line with the thread crest for major diameter, or with the valley for minor diameter.
3. Read the metric value directly from the etched scale.
4. Compare the reading with your thread chart to select the correct fastener.
Upgrade your workshop with this reliable, stainless‑steel thread checker and experience the confidence of precise measurements every time.
Price: Original price was: $ 2.44.$ 1.20Current price is: $ 1.20.

