Best Outside Callipers of 2025

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Outside callipers are a useful tool for accurately measuring the dimensions of an object. They consist of two legs with pointed ends that can be adjusted to fit around the object being measured. Once positioned, the callipers can be locked in place to maintain the measurement. These tools are commonly used in metalworking, woodworking, and other precision-based trades. Outside callipers can help ensure that a project is completed to the correct specifications, making them a valuable addition to any toolkit.
At a Glance: Our Top Picks
Top 10 Outside Callipers
Faithfull 8-Inch Outside Caliper Tool
The Faithfull Outside Caliper is designed for precision and ease of use. It features a strong yet flexible bow spring, which ensures smooth adjustments, making it easier for you to measure accurately. The centrally located adjustment screw allows for precise action, adding to your efficiency. With its polished, natural steel finish, the legs are not only durable but also carefully balanced, providing you with stable measurements. The treated points enhance the tool's effectiveness, making it an essential addition to your toolkit.
Big Horn 19053C 3-Piece Caliper Set
The Big Horn Caliper Set includes outside and inside calipers, as well as flat leg dividers. The outside calipers are ideal for transferring measurements from round or irregular shapes to a ruler, ensuring accuracy in your work. Meanwhile, the inside calipers help you gauge the inner diameter of openings, making it easy to get precise measurements. The flat leg dividers are perfect for tracing contours and scribing circles on uneven surfaces, offering versatility for various tasks. This set is designed to enhance your measuring efficiency and precision.
sourcing map 300mm Stainless Steel Outside Caliper
The sourcing map Outside Caliper is a robust measuring tool, featuring a total length of 300mm and a maximum opening of 550mm. With its firm joint design, you can securely hold the legs in place, making it easy to take precise measurements. Made from stainless steel, the caliper boasts hardened and finely polished points for accurate readings. It is ideal for measuring the thicknesses and outside diameters of various objects, such as sculptures or pottery, providing you with the convenience of measuring both external and internal sizes effortlessly.
Rotur 7"/14" Double Ended Outside Caliper
The Rotur Outside Caliper is a precision measurement tool designed for accurate diameter measurements of objects up to 14 inches. Its pointed tips allow you to measure in tight spaces, making it ideal for detailed work on delicate materials. The firm joint ensures stability, giving you consistent results every time. With its broad measurement range, this caliper is perfect for various tasks in woodworking, metalworking, and quality control, enhancing your efficiency in measuring tasks.
Faithfull 3In Outside Splanneding Caliper
The Faithfull Outside Caliper is designed for high performance, making it an excellent choice for both home users and tradesmen. Its lightweight construction, weighing just 0.04 kg, allows for easy handling, ensuring you can work comfortably for longer periods. Rely on the proven technology from Faithfull, which guarantees reliability in your measurements. Whether you're taking precise measurements or making adjustments, this tool enhances your efficiency and accuracy in any task.
sourcing map 300mm Stainless Steel Caliper
The sourcing map Caliper is a 300mm tool designed for accuracy and durability. Made from 410 stainless steel, its corrosion-resistant properties ensure longevity. With a maximum open length of 545mm, it easily measures external sizes and thicknesses, making it versatile for various tasks. The smooth, burr-free surface allows for precise measurements, so you can trust its reliability over time. The firm friction joint keeps the legs in place, giving you confidence in your adjustments and ensuring consistent results.
sourcing map 20 Inch Steel Spring Caliper
The sourcing map Spring Caliper is a versatile tool designed for precise measurements. With a length of 530mm and a maximum opening of 20 inches, it is perfect for measuring various materials. Made from stainless iron, this caliper offers exceptional durability and wear resistance, ensuring it lasts through many projects. The high-carbon steel legs feature hardened points, allowing you to mark workpieces accurately. Additionally, the smooth, burr-free surface enables you to adjust the legs effortlessly, making your measuring tasks both easy and reliable.
Kozelo 6 Inch Stainless Outside Caliper
The Kozelo Outside Caliper is a reliable tool designed for precise measurement of external sizes, thicknesses, and outside diameters of various objects, such as sculptures and pipes. Made from durable forged 410 stainless metal, it offers high hardness and corrosion resistance, ensuring longevity. The firm joint feature allows you to securely hold the caliper in place, providing accurate readings. For best results, ensure the object is stable during measurement to avoid errors, making it a practical choice for both professionals and DIY enthusiasts.
sourcing map 400mm Outside Caliper for Measurements
The sourcing map Outside Caliper measures a total length of 400mm, making it ideal for various applications. Its firm joint design utilises friction to keep the legs stable, ensuring accurate measurements every time. Made from stainless steel, the caliper features hardened and finely polished points for durability and precision. You can easily measure the thickness and outside diameters of objects, providing you with reliable results whether you’re working on sculpture or pottery projects.
Sourcingmap 350mm Metal Inside Outside Calipers
The Sourcingmap Metal Calipers are designed for precision measurement. With a total length of 350 mm, these calipers allow you to measure both inside and outside dimensions effectively. Each flute has a maximum width of 20 mm, enabling you to take accurate measurements in tight spaces. Made from durable metal, they ensure long-lasting performance. With a net weight of 338g, these calipers are sturdy yet easy to handle, making your measuring tasks more convenient.
Frequently Asked Questions (FAQs)
1. What is a outside caliper used for?
description and use Outside calipers measure thicknesses and outside diameters of objects; inside calipers measure hole diameters and distances between surfaces.
2. How do you handle outside calipers?
Outside calipers are used to measure the external size of an object. To adjust a caliper to the work, open the legs wider than the work and then bring them down to the work. Inside calipers are available in the same size range as outside calipers.
3. What is an internal caliper?
The inside callipers are used to measure the internal size of an object. ... Fine setting of this caliper type is performed by tapping the caliper legs lightly on a handy surface until they will almost pass over the object.
During our outside calliper research, we found 24 outside calliper products and shortlisted 10 quality products. We collected and analyzed 13,575 customer reviews through our big data system to write the outside callipers list. We found that most customers choose outside callipers with an average price of £12.06.
The outside callipers are available for purchase. We have researched hundreds of brands and picked the top brands of outside callipers, including Faithfull, Big Horn, sourcing map, Rotur, Kozelo.

Kenneth Collin graduated from Imperial College, London, at 22. He is a UX/UI designer, a web developer, and a writer, amongst others. At age 14, Kenneth programmed his first app. Kenneth's app served as a remote control for censored devices. "When I was 8, I would pick up scraps from electronics and try to rebuild or at least fix them," Kenneth said in one of his recent articles on Home repairs for top gadgets.