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home > Stainless Steel Vernier Caliper – 0.02mm Precision, 150/200/300mm > Stainless Steel Vernier Caliper – 0.02mm Precision, 150/200/300mm

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Stainless Steel Vernier Caliper – 0.02mm Precision, 150/200/300mmPrecision that fits in your hand for the maker, the jeweler, and the DIY enthusiast. Whether youre measuring the exact diameter of a bead for a necklace repair, checking the thickness of a washer in your workshop, or ensuring a perfect fit for a 3D printed prototype, guesswork has no place. Our Stainless Steel Vernier Caliper delivers industrial grade accuracy (0. 02mm) with four measurement modes: outer diameter, inner diameter, step, and depth. No

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Why choose thelockerguy wholesale?

📏 Precision that fits in your hand – for the maker, the jeweler, and the DIY enthusiast. Whether you’re measuring the exact diameter of a bead for a necklace repair, checking the thickness of a washer in your workshop, or ensuring a perfect fit for a 3D-printed prototype, guesswork has no place. Our Stainless Steel Vernier Caliper delivers industrial-grade accuracy (0.02mm) with four measurement modes: outer diameter, inner diameter, step, and depth. No more squinting at rulers or estimating with tape measures. From jewelry makers to home mechanics, this caliper gives you the confidence of exact dimensions – every single time. Durable high‑carbon steel construction, laser‑engraved scales, and a smooth locking nut mean you’ll rely on it for years.

✨ Why This Vernier Caliper is a Workshop & Jewelry Bench Essential

🎯 0.02mm ultra-high precision – professional results at home – With a vernier accuracy of 0.02mm, you can measure hairline differences. Perfect for jewelry making caliper tasks like bead sizing, wire gauge, and finding exact ring diameters.

🔄 4 measurement modes in one tool – Outer diameter (jaws), inner diameter (upper small jaws), depth (depth rod), and step (front edge). One caliper replaces multiple tools. Ideal for digital-free precision measurement without batteries.

🔩 High-carbon steel – built to last a lifetime – Forged from premium high-carbon steel, hardened and ground. The body resists deformation, and the surface is smooth without burrs – safe for hands and delicate materials. A true industrial grade caliper for serious work.

🔒 Locking nut & micro‑adjustment wheel – Dial in the exact measurement, lock the value with the top nut, and read without worry. Great for transferring measurements to another part or recording data.

📖 Laser‑engraved, wear‑resistant scale – Deep black markings on a satin finish, readable even in low light. No fading or rubbing off over time. The vernier scale is clearly marked for quick reading (0.02mm divisions).

🏠 Range options: 150mm / 200mm / 300mm – Choose the size that fits your work. 150mm is perfect for jewelry and small parts; 300mm for larger woodworking or mechanical projects. Each comes with a protective storage box and user manual.

🖐️ Ergonomic thumb roller & smooth slide – The plastic push slider (or metal fine‑tuning wheel on upgraded models) provides effortless movement. No sticky or jerky action – just smooth precision.

💛 Why This Caliper Belongs in Your Toolbox (or Jewelry Desk)

Stop guessing – start knowing. Whether you’re repairing a necklace and need the exact link size, or building a DIY shelf and need to match a screw diameter, this caliper eliminates the “try it and hope” approach. You’ll save materials, time, and frustration.

Professional accuracy without the professional price. A digital caliper costs three times as much and needs batteries. Our vernier caliper is mechanical, never runs out of power, and delivers the same 0.02mm accuracy. It’s the tool engineers and machinists trust – now available for your home projects.

Durable enough to outlast you. High-carbon steel construction means you can pass this down to the next generation. We’ve even tested it to support an adult’s weight (no malicious stomping, but it proves the toughness). A lifelong investment for makers and fixers.

📏 Specifications & Available Models

Model / Range	Accuracy	Material	Total Length	Outer Jaw Length	Inner Jaw Length	Weight	Included
Industrial Grade 0-150mm (standard)	0.02mm	High Carbon Steel	230mm	40mm	20mm	~150g	Box + Manual
Industrial Grade 0-150mm (upgraded)	0.02mm	High Carbon Steel	230mm	40mm	20mm	~150g	Packaging box + manual
Industrial Grade 0-200mm	0.02mm	High Carbon Steel	290mm	48mm	25mm	~212g	Box + Manual
Industrial Grade 0-200mm (upgraded)	0.02mm	High Carbon Steel	290mm	48mm	25mm	~212g	Packaging box + manual
Industrial Grade 0-300mm	0.02mm	High Carbon Steel	414mm	60mm	30mm	~380g	Box + Manual
Plastic Caliper 0-150mm (black, special model)	0.1mm	Plastic	210mm	37mm	15.5mm	~16g	OPP bag (no box)

*All dimensions manually measured, may vary slightly. Plastic caliper is recommended for light, non‑critical measurements; industrial steel models are for precision work. Upgraded models feature enhanced finish and micro‑adjustment wheel.

🖐️ How to Measure with Your Vernier Caliper (3 simple steps)

Clean the jaws and close them fully. Ensure the zero mark on the vernier scale aligns with the zero on the main scale. If not, note the zero error (rare on new calipers).
Select the correct jaws for your measurement: Use the large lower jaws for outer diameters (beads, tube thickness). Use the small upper jaws for inner diameters (ring sizes, hole widths). Use the depth rod (extends from the end) for hole depths or step heights. Use the front edge for step measurements (like a shoulder on a part).
Read the value: First read the main scale (in mm) just before the zero of the vernier scale. Then find which vernier division exactly aligns with a main scale division – multiply that number by 0.02mm and add to the main scale reading. Example: main scale 12mm + vernier 8 = 12.8mm. Lock the nut if needed to transfer the measurement.

💡 Tip: For beginners, practice on an object with a known size (like a coin or a standard drill bit). The included user manual has a detailed reading guide with illustrations.

❓ Frequently Asked Questions

Is this caliper suitable for measuring jewelry (rings, beads, wire)?

Absolutely. The 150mm model is perfect for jewelry work. Use the inner jaws to measure ring diameters, the outer jaws for bead dimensions, and the depth rod for finding the depth of a setting. The 0.02mm accuracy is far beyond what most jewelers need – you’ll be able to sort beads to 0.1mm tolerance easily.

What’s the difference between industrial steel and plastic calipers?

The steel caliper (high-carbon steel) is rigid, durable, and accurate to 0.02mm – ideal for metalworking, woodworking, and engineering tasks. The plastic caliper is lightweight (16g), lower accuracy (0.1mm), and fine for quick rough measurements or for use with non‑marring requirements (e.g., measuring soft materials). For serious precision, we strongly recommend the industrial steel models.

Does the caliper come with a storage case?

Yes, all industrial grade models (150mm, 200mm, 300mm) come with a protective storage box and a user manual. The plastic caliper comes in an OPP bag only (no box). Upgraded versions also include a box.

How do I read the vernier scale for 0.02mm accuracy?

It’s simpler than it looks. The main scale is in mm. The vernier scale has 50 divisions covering 49mm on the main scale, so each vernier division = 0.02mm. After reading the main scale (e.g., 12mm), find which line on the vernier aligns exactly with a main scale line – let’s say the 8th line (each line = 0.02mm, so 8×0.02=0.16mm). Total = 12.16mm. The manual includes a picture guide.

Can this measure the thickness of a coin or sheet metal?

Yes. Use the outer jaws to clamp the coin. Accuracy is high enough to tell the difference between a penny and a dime thickness (within 0.1mm). Perfect for sheet metal, guitar frets, or plastic cards.

Is the caliper rust‑resistant?

The high-carbon steel body has a protective satin finish, but it is not stainless steel. To prevent rust, wipe it dry after each use and store it in the included box with a light machine oil film (especially in humid environments). The laser engraving will not rub off.

What is the “upgraded industrial grade” version?

The upgraded version includes a fine‑adjustment thumb wheel (micro‑adjustment) for even smoother movement and more precise positioning, plus a nicer packaging box. The measurement accuracy remains 0.02mm. Choose upgraded if you want extra control for repeat measurements.

What is your return policy?

We offer a 30-day return window for unused calipers in original packaging. If you receive a defective item, contact us for a replacement or refund. We stand behind our quality.

*Parameters are manually measured, actual values may vary slightly. New and old packaging may be shipped randomly. Industrial grade models include box; plastic model does not.

Stainless Steel Vernier Caliper – 0.02mm Precision, 150/200/300mm

Name: Stainless Steel Vernier Caliper – 0.02mm Precision, 150/200/300mm
Brand: bwoder.com
SKU: 88433032915
Price: 426.50 USD
Availability: InStock
Rating: 4.839700000000001 (1932 reviews)