10 Best Dial Indicator Under 100 Reviewed for 2025

When you’re in the workshop, whether you’re a hobbyist machinist, a seasoned mechanic, or just someone who needs precise measurements for a project, a reliable dial indicator is an absolute must-have tool. I’ve spent countless hours calibrating equipment, checking runout, and verifying tolerances, and I know firsthand that even on a budget, you can find a best dial indicator under 100 that delivers accuracy and durability. In this guide, I’ll walk you through ten excellent options, sharing my insights to help you make an informed choice without breaking the bank. Let’s dive into some truly dependable tools!

IMAGE	PRODUCT NAME	AMAZON LINK
	Mitutoyo 2046S, 0.01mm X 10mm Dial Indicator, 0-100, Lug…	View on Amazon
	SPI 22-301-6 Deluxe AGD2 Dial Indicator with Revolution…	View on Amazon
	Pro Series by HHIP 4400-0001 Dial Indicator, .001″…	View on Amazon
	TECLOCK AI-921 0-1″ 0-100 2″ Dial WF Precision AGD Dial…	View on Amazon
	Starrett 25 Series Dial Indicator with Bearings and…	View on Amazon
	Aero Space 0-2″ Precision Travel Dial Indicator 0-100…	View on Amazon
	Accusize Industrial Tools 0.060” by 0.0005” (Range by…	View on Amazon
	Starrett Universal Dial Test Indicator Set with Back…	View on Amazon
	SPI 14-223-2 Back Plunger Dial Indicator: 0.1″ Range, 0-100…	View on Amazon
	Shars .060″ Swiss Type Horizontal Dial Test Indicator.0005″…	View on Amazon

Product Reviews

Mitutoyo 2046S, 0.01mm X 10mm Dial Indicator, 0-100, Lug…

Mitutoyo is a name synonymous with precision, and even their budget-friendly options deliver quality. This 0.01mm metric indicator offers a smooth, accurate reading for various workshop tasks. Its robust construction means it can stand up to daily use without losing its precision, making it a solid investment for those working with metric specifications.

Key features that stand out:
– Stainless steel stem and hardened steel spindle for superior durability.
– Hard coated crystal designed for excellent scratch resistance.
– Improved resistance to dust and water helps maintain accuracy in challenging environments.
– Lug back for easy mounting.

Pros:
– Exceptional build quality from a renowned brand.
– High resistance to wear and environmental factors.
– Smooth and consistent movement for reliable readings.
Cons:
– Only suitable for metric measurements.

Best for: Precision metric measurements in demanding workshop environments where reliability and durability are paramount.

Expert Opinion: This Mitutoyo model is a testament to their brand’s quality, offering robust construction and reliable metric precision. It’s an excellent choice if you primarily work with metric units and need a durable, long-lasting tool.

SPI 22-301-6 Deluxe AGD2 Dial Indicator with Revolution…

The SPI Deluxe AGD2 dial indicator brings a lot to the table for its price point. With its clear, easy-to-read black dial and white graduations, you won’t struggle to interpret your measurements. The inclusion of NIST traceability certification is a huge bonus, ensuring you can trust its accuracy right out of the box, which is a rare find in this price range.

Key features that stand out:
– Measures precisely and accurately on a 2.2″ diameter dial with 0.001″ graduations and a revolution counter.
– Easy-to-read white graduations on a black dial for clear 1-1000 readings.
– Supplied with NIST traceability certification, lug and flat back, and a fitted case.
– Sturdy aluminum housing stands up to workshop environments.
– Stem diameter: 3/8 inch (8mm) with #4-48 (M2.5) thread.

Pros:
– Certified accuracy with NIST traceability.
– Excellent readability with contrasting dial colors.
– Comes with versatile mounting options and a protective case.
Cons:
– Aluminum housing, while sturdy, might not be as heavy-duty as solid steel for extreme abuse.

Best for: Users needing certified accuracy and a complete, ready-to-use package for general inspection and quality control.

Expert Opinion: The SPI 22-301-6 really packs value with its NIST certification and comprehensive accessory kit. It’s a fantastic option for anyone who needs verifiable precision without spending a fortune.

Pro Series by HHIP 4400-0001 Dial Indicator, .001″…

The HHIP Pro Series dial indicator is a no-frills, robust tool designed for everyday workshop demands. It focuses on the essentials: durable components and smooth operation. The hardened stainless steel rack and contact point, combined with a jeweled movement, ensure longevity and consistent performance, making it a reliable workhorse for your bench.

Key features that stand out:
– 0-100 Reading for straightforward measurements.
– Rack & contact point made of hardened stainless steel for extended life.
– Jeweled movement ensures smooth and accurate readings.
– Stem: 3/8″ diameter and a ~2″ diameter dial face for standard compatibility.
– Contact point interchangeable with thread 4-48 and includes a Lug Back.

Pros:
– Very durable construction with hardened internal components.
– Smooth and consistent jeweled movement.
– Standard sizing and interchangeable contact point for versatility.
Cons:
– Lacks a revolution counter, which can make reading multiple rotations slightly more challenging.

Best for: General machining and inspection tasks where durability, smooth action, and affordability are top priorities.

Expert Opinion: This HHIP model is a dependable choice for those who need a sturdy, basic dial indicator. It might not have all the bells and whistles, but it nails the fundamentals of accuracy and durability for daily shop use.

TECLOCK AI-921 0-1″ 0-100 2″ Dial WF Precision AGD Dial…

Teclock is a highly respected Japanese brand known for its precision instruments. This particular listing, however, is for a “Surplus Used Item.” This means you have the potential to snag a high-quality indicator from a top brand for a significantly reduced price, but it comes with caveats. It’s crucial to inspect the product photos thoroughly and understand you’re buying a pre-owned tool.

Key features that stand out:
– Surplus Used Item – potentially a high-quality brand at a lower cost.
– Please inspect pictures for exact condition – transparency about its used status.
– Packaging has wear, or missing – typical for surplus items.

Pros:
– Potential to acquire a high-quality, reputable brand indicator for a budget price.
Cons:
– Being a used item, there’s a risk of wear, damage, or reduced accuracy without prior inspection.

Best for: Savvy buyers on a very tight budget who are comfortable with inspecting used tools and willing to take a chance on a potentially high-value item.

Expert Opinion: While Teclock instruments are typically excellent, the “surplus used” status means this isn’t a guaranteed “best” pick without careful personal verification. It’s a high-risk, potentially high-reward option for the best dial indicator under 100.

Starrett 25 Series Dial Indicator with Bearings and…

Starrett is another giant in the world of precision measurement, and their 25 Series indicators are built to last. This model emphasizes extreme robustness and rigid construction, ensuring long-term accuracy and resistance to workshop abuse. The unbreakable crystal and hardened components are a testament to its quality, making it a tool you can rely on for years.

Key features that stand out:
– Made From Robust Materials including an unbreakable crystal, hardened stainless steel stem, gears, and pinions.
– Rack and spindle and a massive bridge for rigid bearing support, ensuring stable measurements.

Pros:
– Exceptional durability with high-quality, hardened components.
– Unbreakable crystal provides added protection.
– Superior rigidity for consistent, precise readings over time.
Cons:
– Its premium build means it might stretch the upper limit of the under-$100 budget for this kind of dial indicator.

Best for: Professionals and serious hobbyists who demand top-tier durability, long-term reliability, and consistent precision from a renowned brand.

Expert Opinion: When it comes to enduring precision, Starrett rarely disappoints. This 25 Series model is built like a tank and will deliver accurate measurements consistently, making it a wise long-term investment even if it pushes the budget.

Aero Space 0-2″ Precision Travel Dial Indicator 0-100…

If your projects involve measuring larger depths or heights, the Aero Space 0-2″ Precision Travel Dial Indicator is an excellent choice within our budget. Its extended 2-inch range significantly broadens its applicability compared to standard 1-inch indicators. Combined with hardened stainless steel components and a jeweled movement, it offers a blend of capability and precision.

Key features that stand out:
– Aero Space 0-2″ dial indicator with an impressive Range: 0-2 inch.
– Graduation: 0.001 inch and Reading: 0-100.
– Lug back for secure mounting.
– Rack & contact point made of hardened stainless steel and Jeweled movement for smooth operation.

Pros:
– Extended 2-inch measuring range for greater versatility.
– Durable hardened stainless steel components.
– Smooth and reliable jeweled movement.
Cons:
– The brand name might not be as established as others, potentially requiring more scrutiny of initial accuracy.

Best for: Applications requiring greater travel depth or height measurements without needing to reposition the indicator.

Expert Opinion: The Aero Space indicator stands out for its generous 2-inch travel, a significant advantage for larger workpieces. It offers solid mechanics, making it a strong contender for the best dial indicator under 100 if range is a priority.

Accusize Industrial Tools 0.060” by 0.0005” (Range by…

The Accusize Dial Test Indicator (DTI) is a fantastic tool for detailed surface and alignment checks. Unlike standard dial indicators, DTIs are designed for very fine, localized measurements, perfect for checking runout, parallelism, or flatness. With its high resolution and comprehensive accessory kit, including multiple points and dovetail stems, this DTI offers incredible value.

Key features that stand out:
– Range: 0.060″ with a high Resolution: 0.0005″ and Graduation: 0-150-0.
– Jewelled movement and a 210° Swivel arc for versatile positioning.
– Revolution counter and an Easy-to-read tilted dial.
– Tungsten carbide points (0.080″ diameter) for durability.
– Includes dovetail stems: 3/8″ and 5/32″ and 3 points: .040″, .080″ and .120″ diameter, furnished in a molded case.

Pros:
– Exceptional precision with 0.0005″ resolution.
– Highly versatile with a swivel arc and multiple accessories.
– Durable tungsten carbide contact points.
– Comes in a protective molded case.
Cons:
– Limited measurement range (0.060″) means it’s not suitable for general, long-travel measurements.

Best for: Highly precise measurements of flatness, parallelism, runout, and alignment in tight spaces where fine detail is critical.

Expert Opinion: For anyone needing a precise dial test indicator, the Accusize model is a powerhouse. Its high resolution and extensive kit make it an outstanding value, easily earning its spot among the best dial indicator under 100 for specialized tasks.

Starrett Universal Dial Test Indicator Set with Back…

Another Starrett offering, this Universal Dial Test Indicator Set lives up to the brand’s reputation for excellence. It’s built for precision and durability, excelling at intricate measuring tasks like checking runout on spindles or flatness on surfaces. The “Universal Set” implies it comes with a variety of accessories, enhancing its versatility for different setups, which is typical for a Starrett DTI.

Key features that stand out:
– Made From Robust Materials with hardened steel contact points and heavy-duty construction.
– Accuracy You Can Count On – Starrett precision measuring tools exceed national and international standards.
– Easy to Use with a clear dial face and pointer.
– The Standard for Excellence – manufacturing quality tools since 1880.

Pros:
– Starrett’s legendary precision and durability.
– Versatile for various intricate measuring tasks.
– Easy to read and setup.
– Backed by an unparalleled reputation for quality.
Cons:
– As a dial test indicator, its limited range makes it unsuitable for general purpose, long-travel measurements.

Best for: Professionals who demand the highest accuracy and durability for intricate alignment and surface inspection tasks, trusting in a globally recognized brand.

Expert Opinion: If you absolutely need a DTI that won’t let you down and can be verified against the highest standards, this Starrett set is a phenomenal choice. Its enduring quality makes it a top contender in the best dial indicator under 100 category for precise, specialized work.

SPI 14-223-2 Back Plunger Dial Indicator: 0.1″ Range, 0-100…

The SPI Back Plunger Dial Indicator is a specialized tool designed to excel where traditional indicators can’t reach. Its compact, perpendicular design makes it perfect for measuring runout or parallelism in confined spaces, such as inside bores or tight machine setups. Don’t let its small size fool you; it’s built to ANSI standards with jeweled bearings and a robust brass case.

Key features that stand out:
– 0.1″ Range, 0-100 Dial Reading, 0.001″ Graduations, with 0.1″ per Revolution.
– Back plunger indicator adds flexibility for toolroom and general-purpose machining and inspection applications.
– Compact size and perpendicular design can be adjusted to fit any viewing angle.
– Built to ANSI standards with jeweled bearings for extra-smooth action and long life.
– Heat-treated stainless steel racks, gears, and pivots; 1-piece forged brass case with chrome plated finish; scratch resistant non-glare crystal.

Pros:
– Excellent for measurements in tight, awkward spaces.
– Superior build quality with hardened steel internals and brass case.
– Smooth, precise action with jeweled bearings.
– Highly adjustable for various viewing angles.
Cons:
– Its very limited range (0.1″) restricts its use to specific, short-travel measurements.

Best for: Measuring runout, concentricity, or parallelism in confined spaces or inside bores where traditional indicators are impractical.

Expert Opinion: For specialized tasks in hard-to-reach areas, this SPI back plunger indicator is an absolute lifesaver. Its robust construction and precise action make it an indispensable tool for targeted measurements, securing its place as a best dial indicator under 100 for unique applications.

Shars .060″ Swiss Type Horizontal Dial Test Indicator.0005″…

The Shars Swiss Type Horizontal Dial Test Indicator offers high precision and a practical design for intricate measuring tasks. Its “Swiss Type” designation often implies attention to fine mechanics and accuracy. With a high 0.0005″ graduation and an easy-to-read dial, it’s perfect for checking runout, alignment, and flatness on your workpieces, especially when a horizontal reading is preferred.

Key features that stand out:
– Measuring Range: .060″ with fine Graduation: 0.0005″.
– Dial Reading: 0-15-0 and Accuracy: ±0.0008″/0.02mm.
– Easy to read 1.5″ dial face with measuring range counter.
– Includes 5/32″ and 3/8″ diameter posts and a Fitted case for portability and protection.

Pros:
– High precision 0.0005″ resolution.
– Good specified accuracy for its price point.
– Comes with multiple mounting posts and a protective case.
– Clear, easy-to-read horizontal dial.
Cons:
– The limited 0.060″ range means it’s not a general-purpose indicator for larger movements.

Best for: Detailed surface inspections and alignment tasks where high precision and a horizontal reading are preferred, especially in intricate machining.

Expert Opinion: This Shars test indicator brings impressive “Swiss Type” precision within an affordable reach. It’s an excellent tool for fine-tuning setups and verifying tolerances, easily making it one of the best dial indicator under 100 for those meticulous jobs.

Helpful Comparison Short Insights

When choosing the best dial indicator under 100, remember that standard dial indicators (like Mitutoyo, SPI Deluxe, HHIP, Aero Space, Starrett 25 Series) are best for longer travel measurements, typically 1 inch or more, perfect for depth, height, or larger runout checks. On the other hand, dial test indicators (DTIs) (Accusize, Starrett Universal DTI, Shars Swiss Type) have a very short travel, usually less than 0.1 inches, but offer higher resolution and are ideal for checking flatness, parallelism, and very small runout, often in tight spaces. Then there are back plunger indicators (SPI Back Plunger) which are perfect for extremely confined areas.

Consider your primary use: if you need certified accuracy, the SPI 22-301-6 with its NIST traceability is a standout. For extreme durability and brand reputation, the Starrett 25 Series and Mitutoyo 2046S are hard to beat, even on a budget. If extended range is crucial, the Aero Space 0-2″ model offers impressive travel. For fine detail and intricate work, the Accusize and Shars DTIs provide excellent resolution and versatility. And don’t forget the SPI Back Plunger for those hard-to-reach spots. The HHIP Pro Series provides a robust, no-frills option, while the TECLOCK used item is a high-risk, potentially high-reward gamble for the very budget-conscious.

Final Verdict

Finding the best dial indicator under 100 truly depends on your specific needs, but there are excellent choices available.

If overall value, features, and certified accuracy are your top priorities, the SPI 22-301-6 Deluxe AGD2 Dial Indicator is my top recommendation. It’s a comprehensive package that delivers confidence in your measurements.

For those requiring top-tier brand quality and robustness for standard measurements, the Mitutoyo 2046S (for metric) or the Starrett 25 Series (for imperial, though it pushes the budget) are exceptional, long-term investments.

If precision for intricate alignment and surface checks (DTI) is what you need, the Accusize Industrial Tools 0.060” by 0.0005” Dial Test Indicator stands out for its resolution and comprehensive kit, offering superb value.

And finally, for specialized tasks in tight or awkward spaces, the SPI 14-223-2 Back Plunger Dial Indicator is an indispensable tool that performs flawlessly where others can’t.

No matter your choice, each of these indicators offers genuine value and can significantly improve the precision of your work without emptying your wallet.

Comprehensive FAQ Section

Q1: What is the main difference between a dial indicator and a dial test indicator (DTI)?
A1: A standard dial indicator typically measures larger ranges (e.g., 1 inch, 2 inches) and has a plunger that moves axially. It’s great for depth, height, and general runout. A dial test indicator (DTI) has a much shorter measuring range (e.g., 0.030″ or 0.060″) and uses a small lever-style contact point that swivels. DTIs are ideal for very precise measurements of flatness, parallelism, and runout in tight or awkward spaces due to their compact size and articulating probe. Both can be the best dial indicator under 100 depending on your specific task.

Q2: Why is “NIST traceability” important for a dial indicator?
A2: NIST traceability means that the calibration of the instrument can be linked back to measurement standards maintained by the National Institute of Standards and Technology (NIST) through an unbroken chain of comparisons. For a best dial indicator under 100, this ensures a higher level of confidence in its accuracy and is crucial for professional applications where precision and verification are paramount, like quality control.

Q3: Can I get a truly reliable dial indicator for under $100?
A3: Absolutely! As this article demonstrates, there are many reliable and accurate options for the best dial indicator under 100. While you might not get all the features of a high-end model, you can find indicators from reputable brands that offer excellent precision and durability for most workshop and hobbyist needs.

Q4: What should I look for in terms of construction material for a budget dial indicator?
A4: For durability, look for features like hardened stainless steel stems, spindles, racks, and contact points. Jeweled movements also contribute to smoother action and longer life. For crystal, scratch-resistant materials are a plus. A sturdy housing (even aluminum) is better than flimsy plastic. These materials enhance the longevity and reliability of your best dial indicator under 100.

Q5: How do I properly care for and maintain my dial indicator to ensure its longevity?
A5: Always store your dial indicator in its protective case when not in use. Keep it clean by wiping it with a soft, lint-free cloth, and avoid exposing it to excessive dust, moisture, or extreme temperatures. Do not drop or subject it to harsh impacts. Periodically check for smooth movement and ensure the contact point is clean. Proper care will ensure your best dial indicator under 100 remains accurate for years.

Q6: Are metric-only dial indicators a disadvantage, or should I opt for imperial units?
A6: The choice between metric and imperial depends entirely on the units you primarily work with. If most of your blueprints or projects are in millimeters, a metric-only indicator like the Mitutoyo 2046S is ideal. If you primarily use inches, then an imperial indicator (0.001″ or 0.0005″ graduations) is better. Some users might opt for both if their work varies. The best dial indicator under 100 for you will match your measurement system.

Q7: What is a “revolution counter” and why is it useful?
A7: A revolution counter is a small secondary dial on a dial indicator that tracks the number of full rotations the main pointer has made. For example, if your main dial reads 0-100 (representing 0.100″ or 1mm per revolution), the revolution counter will show how many full 0.100″ or 1mm increments have been measured. This prevents misreading measurements that span multiple revolutions, making your best dial indicator under 100 even more accurate and easy to use.