Master Precision with the Surface Roughness Tester SJ-310

Achieving the perfect finish requires more than just a visual check. The Surface Roughness Tester SJ-310 brings laboratory-level precision directly to the production floor. This portable unit empowers operators to measure surface textures with incredible speed and accuracy. It is the gold standard for anyone who needs reliable data without moving parts to a dedicated lab.

Advanced Features for Modern Inspection

The Roughness Tester stands out due to its user-centric design. It features a large, 5.7-inch color touch-screen that provides high visibility even in dark factory environments.

• Built-in Printer: Generate hard-copy reports instantly for immediate documentation.

• Touch-Screen Navigation: Access menus and settings with an intuitive, easy-to-use interface.

• Internal Memory: Store up to 10 measuring conditions and 300 data points internally.

• Multi-Standard Compliance: The tool supports international standards like ISO, ANSI, and VDA.

Enhance Your Workflow Efficiency

Portability shouldn't mean compromising on power. The Surface Roughness Tester allows you to perform measurements at any angle, including vertical and upside-down surfaces. Its rechargeable battery ensures you can work all day without hunting for an outlet. Because the unit analyzes data instantly, your team can make fast adjustments to machinery, reducing scrap and saving money.

The Ultimate Professional Choice

Stop guessing about your surface quality. The Surface Roughness Tester SJ-310 offers the durability and precision that Mitutoyo is famous for worldwide. Whether you work in automotive, aerospace, or general machining, this tool provides the data you need to succeed. Upgrade your inspection process today and ensure every workpiece meets your highest standards.

• UDT-2 is the accuracy tester for 0.01mm resolution/graduation dial indicators, dial test indicators and bore gages.
• Stem mounting hole: ø6, ø8mm (Metric) ø1/4”, ø3/8” (Inch)

Metric thickness gages are available with tapered leaves
Each leaf is marked with its thickness
Each leaf is detachable if necessary

Identify Fasteners Quickly and Accurately

Matching the wrong bolt to a threaded hole can destroy expensive machinery components instantly. Stripped threads cost workshops thousands of dollars in repairs and downtime every single year. High-quality thread pitch gages solve this frustration completely. They provide a fast, foolproof way to identify any fastener thread profile.

What are Thread Pitch Gages?

Thread pitch gages are compact, pocket-sized measuring tools containing a collection of serrated metal leaves. Manufacturers precisely stamp each leaf to match a specific thread profile.

Operators use them to determine the pitch of a screw, bolt, or tapped hole. Metric sets measure the distance between thread crests in millimeters, while imperial sets count the number of threads per inch (TPI).

Key Features of a Professional Gage Set

Investing in a rugged, industrial-grade leaf set offers major shop floor benefits:

• Dual-System Versatility: Most comprehensive kits bundle both metric and imperial leaves into a single folding case.

• Narrow Leaf Profiles: The slim, locking leaves reach easily into tight internal nuts and deep tapped cavities.

• Hardened Steel Construction: The durable serrated teeth resist bending and wear during heavy daily use.

• High-Visibility Stamping: Clear, laser-etched markings ensure you select the correct size instantly.

Pro Tips for Flawless Thread Matching

Inspection Tip: Always clean dirt, rust, and old lubricants off the fastener before testing. Debris trapped in the grooves mimics a bad thread fit.

Press the selected leaf firmly into the threads of your bolt. Look toward a light source behind the tool. If you see light shining through the teeth, the pitch is incorrect. Try different leaves until the teeth mesh perfectly with zero gaps.

Stop guessing your thread sizes and ruining your workpieces. Invest in a premium set of thread pitch gages today to ensure flawless assembly on every project.

Precision Angle Measurement Made Easy

Accurate angle measurement is the backbone of high-quality machining, engineering, and woodworking. When standard protractors fall short, professionals rely on the Universal Bevel Protractor. This mechanical masterpiece ensures your components fit perfectly every single time.

What is a Universal Bevel Protractor?

The Universal Bevel Protractor is a highly accurate angular measuring instrument. Unlike basic tools, it measures angles down to 5 minutes of a degree ($5'$ or $1/12^\circ$).

Engineers use it to inspect mechanical parts, set up machine tools, and check jigs. Its versatility stems from its adjustable blade and rotating dial, which allow you to measure almost any angle with absolute confidence.

Key Components and How it Works

The tool consists of a few essential parts designed for maximum stability:

• The Base/Stock: Aligns against the reference surface of your workpiece.

• The Rotating Dial: Houses the main scale, graduated in degrees from $0^\circ$ to $90^\circ$.

• The Vernier Scale: Provides the ultra-fine minute readings.

• The Adjustable Blade: Slides and locks to track the specific angle you are measuring.

To take a reading, you clamp the base and blade against the workpiece. You read the main scale first for whole degrees, then use the vernier scale to find the exact minutes.

Why Your Workshop Needs One

Efficiency Tip: Standard tools cause errors that ruin raw materials. Upgrading to a vernier-based protractor eliminates guesswork entirely.

It offers unmatched durability and precision. It handles complex layout work effortlessly. Whether you run a busy machine shop or a precision DIY garage, this tool elevates your craftsmanship.

Invest in a Universal Bevel Protractor today to achieve flawless, professional-grade results on every project.

Maintain Daily Accuracy with a Working Standard Scale

Precision requires constant vigilance on the production floor. While a master scale stays in the lab, a Working Standard Scale handles the daily grind. These tools provide a reliable reference for calibrating your shop equipment. They ensure that every measurement stays within tolerance throughout the work week.

The Role of a Working Standard

A working standard serves as your first line of defense against measurement errors. You use it to check calipers, height gauges, and vision systems directly on the floor. This practice prevents small deviations from becoming expensive mistakes. By verifying tools daily, you maintain 100% confidence in your output. It bridges the gap between high-level laboratory masters and everyday production tools.

Built for the Shop Environment

Manufacturers design these scales for durability. Unlike delicate master scales, a working standard scale resists the rigors of a busy workshop.

• Rugged Materials: High-strength glass or stainless steel ensures longevity.

• Clear Markings: Laser-etched graduations remain visible after years of use.

• Protective Coatings: These scales often feature surfaces that resist oil and scratches.

• Portable Design: Easy handling allows for quick checks at different workstations.

Why Your Facility Needs One

Using a working standard scale streamlines your quality control process. It reduces the downtime spent sending tools back to the lab for minor checks. Your team can verify their own equipment in seconds. This autonomy boosts productivity and fosters a culture of precision.

Consistent calibration is the secret to manufacturing success. Equip your team with a professional working standard to keep your production line running smoothly.

Achieve Flawless Precision with a Centering Holder

Machining success relies entirely on perfect alignment. Even a tiny fraction of a millimeter out of alignment can ruin your workpiece or break an expensive tool. That is why a centering holder is essential for every lathe and milling setup. It ensures your tools line up perfectly every single time.

What is a Centering Holder?

A centering holder is a specialized workholding accessory designed to align cutting tools precisely with the machine spindle. Operators frequently use them for drilling, reaming, and tapping operations.

By clamping the tool securely, it keeps the cutting edge perfectly concentric to the workpiece. This stability eliminates the tool deflection that causes inaccurate holes.

Key Benefits for Your Machine Shop

Using a high-quality holder completely transforms your production workflow:

• Eliminates Runout: It holds the tool on the exact centerline to prevent wobbling.

• Saves Setup Time: Quick-adjust features allow you to align tools in seconds.

• Extends Tool Life: Balanced forces mean your drills and taps wear down much slower.

• Improves Surface Finish: Smooth, centered cutting creates cleaner holes.

How to Get the Best Results

Pro Tip: Always clean the machine spindle and the holder shank before installation. Small metal chips can disrupt the alignment.

Indicate the holder using a dial test indicator during setup. Adjust the holder until the runout reads zero. Once you lock it into place, you can run high-speed operations with total confidence.

Don't let misalignment ruin your productivity. Upgrade to a premium centering holder today to maximize your machining accuracy.

The Secret to Accurate Dial Indicator Readings

A dial test indicator is only as good as the part touching your workpiece. Machinists often overlook the contact point for a dial test indicator, yet this tiny component determines your final accuracy. Choosing the wrong tip leads to false readings and ruined parts.

Why the Contact Point Matters

The contact point transfers physical movement from the workpiece to the indicator gear train. Different inspection jobs require different shapes and materials.

If you use a worn or incorrect tip, you introduce cosine error. This mechanical error skews your measurements. Selecting the right contact point ensures perfect repeatability.

Common Types of Contact Points

Different shapes solve specific measurement challenges on the shop floor:

• Ball Points: The standard choice for flat surfaces. Ruby or carbide balls resist daily wear.

• Flat Points: Ideal for measuring convex surfaces or spheres.

• Pin/Needle Points: Perfect for reaching into narrow grooves, slots, or small holes.

Tips for Peak Precision

Maintenance Tip: Regularly check your contact points for flat spots. A worn ball point will distort your roundness measurements.

Always match the point length to your indicator's original specifications. Changing the length alters the leverage ratio of the internal pivot mechanism, which completely ruins the tool's calibration.

Additionally, ensure the thread size matches your indicator brand. Most manufacturers use either M1.6 or #4-48 threads.

Upgrade Your Setup Today

Do not let a worn tip compromise your machining quality. Inspect your contact point for a dial test indicator regularly. Swap out damaged tips today to keep your quality control flawlessly precise.

• Stylus length affects the scale factor of an indicato