Best Feeler Gauges of 2025

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Feeler gauges are essential tools for anyone who works with machinery or mechanical devices. These thin, flat blades come in a variety of sizes and are used to measure the gap between two objects. They are commonly used to ensure that engine parts are properly aligned, but they can also be used for a variety of other tasks. Feeler gauges are made from high-quality materials and are designed to be durable and long-lasting. They are a must-have for anyone who wants to ensure that their machinery is running smoothly and efficiently.
At a Glance: Our Top Picks
Top 10 Feeler Gauges
AMERICAN MUTT TOOLS Feeler Gauge Set
The AMERICAN MUTT Feeler Gauges are designed for precision and durability, making them a must-have for any workshop. You can rely on these gauges for accurate measurements, ensuring your projects are executed flawlessly. The innovative angled design provides access to tight spaces, allowing you to work efficiently. With clearly marked sizes and laser-etched measurements, reading and interpreting the gauges becomes a simple task. The ultra-thin gauges are perfect for fine adjustments, giving you the precision needed for engineering and automotive applications.
Steel Feeler Gauge Dual Marked Metric and Imperial Tool
This feeler gauge set is made of durable 65 manganese steel and has 32 blades thickness. This foldable tool is easy to store and take with you. The dual markings in metric and imperial allow for easy identification, with numbers etched into the gauge for convenience. The metric sizes range from 0.04-0.88mm while the inch sizes range from 0.0015-0.035 inches. It comes with anti-rust oil on the stainless steel to prevent rust.
Spurtar Universal Feeler Gauge Set
The Spurtar Universal Feeler Gauge Set is a practical and durable tool set designed for measuring gap width and thickness in various applications. Made of stainless steel, this gauge set comes with 32 blades of varying thickness, allowing you to measure gaps from 0.0015 Inch to 0.035 Inch (0.04mm to 0.88 mm). With clear and easy-to-read markings, you can quickly and accurately measure gap widths and thicknesses in both metric and imperial sizes. The laser-etched numbers and scales ensure that the markings won't wear out easily, making this feeler gauge set long-lasting. Additionally, the anti-rust oil coating prevents the gauge from rusting and ensures easy opening. Whether you're a designer, engineer, or machinist, the Spurtar Universal Feeler Gauge Set is a practical and reliable tool that belongs in your toolbox.
GEARWRENCH 32 Blade Deluxe SAE/Metric Feeler Gauge
This GEARWRENCH 32 Blade Deluxe SAE/Metric Feeler Gauge measures clearances from 0.038 to 0.889mm and comes in black color. Manufactured in the United States, it has a compact package size of 7.62 L x 1.524H x4.064W(centimeters). This gauge is perfect for measuring gaps and clearances in your machinery, ensuring accuracy for your projects.
Spurtar 32 Blades Stainless Steel Feeler Gauge
The Spurtar 32 Blades Stainless Steel Feeler Gauge is a user-friendly and easy-to-identify tool for measuring gap width or thickness. It features dual markings in SAE and Metric units, ranging from 0.001inch to 0.04inch (0.03mm to 1mm), and the numbers of size are etched into the feeler gauge for easy identification. The gauge is made of high-quality flexible 65 manganese steel, which is hardened and polished for precise and long-lasting usage. It is foldable, comes with a plated steel case, and is coated with vaseline to prevent rust and ensure ease of use.
Stainless Steel Feeler Gauge Set
This feeler gauge set is made of 65 manganese steel and includes 25 blades of various thicknesses. The dual metric and imperial markings, ranging from 0.038 mm to 1 mm or 0.0015 inch to 0.04 inch, are etched into the blades for easy identification. The foldable design makes it easy to store and take on-the-go. Anti-rust oil is applied to the stainless steel to prevent rusting.
ARES Tapered and Offset Feeler Gauge Set
The ARES 11042 2-Piece Feeler Gauge Set includes a tapered gauge with 32 dual-marked SAE and metric sizes, and an offset gauge with 16 dual-marked sizes. The tapered gauge has a tapered profile for accessing tight spaces, and the offset gauge has an offset design for awkward areas. Each blade is marked with both metric and SAE sizing, making it easy for you to measure tappet clearances, spark plug gaps, bearing clearances, piston ring gaps, and more. The set folds neatly into itself for easy transportation and storage.
CRAFTSMAN CMMT14105 Feeler Gauge
The CRAFTSMAN CMMT14105 Feeler Gauge is a convenient tool that allows you to measure the exact clearance between two parts. With its durable stainless-steel blades, it provides protection against corrosion, ensuring long-lasting performance. The blade range of 0.015” - 0.035” (0.038mm - 0.889mm) offers flexibility for various applications. Whether you need to measure gaps in machinery or automotive components, this feeler gauge has got you covered. Its precise measurements enable you to make accurate adjustments, ensuring optimal performance. The CRAFTSMAN CMMT14105 Feeler Gauge is an essential tool for any DIY enthusiast or professional mechanic, providing the convenience and durability you need for your projects.
CHERALKEST Stainless Steel Feeler Gauge Set
The CHERALKEST Feeler Gauge Set is designed for precision in measuring gaps and thicknesses with its 32 stainless steel blades. Made from durable #65 manganese steel, these foldable gauges are not only easy to carry but also convenient to store. You can easily identify sizes thanks to the dual metric and imperial markings, which are etched into each blade for clear visibility. This set measures from 0.0015 to 0.035 inches, making it ideal for tasks like checking tappet and spark plug clearances, ensuring that you can achieve accurate measurements every time.
Proto J000TL 25 Blade Long Feeler Gauge Set
The Proto J000TL 25 Blade Long Feeler Gauge Set includes 1/2-inch x 12-inch blades in a steel holder with sizes ranging from .0015-inch to .040-inch, etched with both decimal size and metric equivalent. The set weighs 0.72-lbs and is made in the USA. This feeler gauge set is perfect for accurately measuring gaps and clearances, making it a valuable tool for mechanics and DIY enthusiasts.
Frequently Asked Questions (FAQs)
1. What is a feeler gauge used for?
A feeler gauge is a tool used to measure or set very small gaps, typically under 1 mm. It consists of thin, delicate blades that can be inserted into gaps or cracks to determine their width. The blades are protected when folded back into the handle of the gauge.
2. What types of feeler gauges are there?
There are several types of feeler gauges available, including: - Go NoGo feeler gauge - Straight leaf feeler gauge - Tapered feeler gauge - Double-ended gauge - Offset gauge - Feeler strip These different types of feeler gauges offer versatility for measuring and setting gaps in various applications.
3. Can you gap a spark plug with a feeler gauge?
Yes, you can use a feeler gauge to gap a spark plug. In addition to the feeler gauge, you will need a pair of pliers, preferably straight-handled, to adjust the gap. Some feeler gauges even have wire loops and bending hooks specifically designed for gapping spark plugs, making the process more convenient and precise.
During our feeler gauge research, we found 24 feeler gauge products and shortlisted 10 quality products. We collected and analyzed 122,295 customer reviews through our big data system to write the feeler gauges list. We found that most customers choose feeler gauges with an average price of $10.70.
The feeler gauges are available for purchase. We have researched hundreds of brands and picked the top brands of feeler gauges, including AMERICAN MUTT TOOLS, Hotop, Spurtar, GEARWRENCH, ARES. The seller of top 1 product has received honest feedback from 275 consumers with an average rating of 4.9.

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.