Calipers

Digital / Electronic Calipers

Digital (aka electronic) calipers stand out for their ease of use and clear digital readouts. They are ideal for users who value speed and digital accuracy. Opt for digital or electronic calipers if you need:

• Readability in low or poor light conditions: Bright digital displays make reading measurements easier than traditional vernier or dial calipers in low-light conditions. Some even feature extra-large LCDs.

• International projects using various measurement systems: They can easily switch between metric and imperial units at the push of a button.

• Ultra-precise measurements: They provide high accuracy with digital readouts to thousandths of an inch or hundredths of a millimeter.

• Quick and accurate data documentation: Some digital calipers can output data directly to digital files, enhancing efficiency and reducing the risk of transcription errors.

• Accessibility: For users with visual impairments, digital calipers with large displays or audio output features can provide accessibility that traditional calipers cannot.

• A waterproof construction: Waterproof digital calipers are especially valuable in fields such as chemistry or fluid mechanics. Check tech specifications for exact water resistance.

Dial Calipers

Dial calipers offer a balance of traditional mechanics and user-friendliness. They are also durable, making them suitable for harsh environments or extreme conditions. Consider this type if you need:

• Quick readings with a tool that’s easy to use: Dial calipers are more straightforward to read than vernier calipers, particularly in fast-paced environments.

• To repeat measurements: The dialmakes it easier to return to or check against a specific measurement, which is helpful in repetitive measuring tasks.

• Non-electronic precision: For environments where electronic instruments might fail but precise, easy-to-read tools are still needed, dial calipers offer a mechanical precision tool with no batteries required.

Vernier Calipers

Time-honored vernier calipers are known for their precision and versatility. They do, however, require a little training to use. They are also more delicate than other types. Choose vernier calipers if you need:

• Precision reading without batteries: They are a better choice in environments where electronic devices might fail due to lack of power, as they do not require batteries, unlike digital calipers.

• A budget-friendly option: Vernier calipers are less expensive than dial calipers, making them a cost-effective solution for basic measurement tasks.

• Non-magnetic tools: In environments where magnetic fields might interfere with the functioning of dial calipers, especially those with electronic components, vernier calipers would be unaffected and thus preferable.

Joint Calipers

The legs of firm joint calipers are locked into place by tightening or loosening a screw at the joint. They may be a little time-consuming to release, adjust, and relock, but firm joint calipers hold their position well. For this reason, they are best for tasks in which measurements don’t need to be changed frequently.

The legs of spring calipers are held in place by the constant tension of a spring at the joint. No other manual adjustment is needed to lock or unlock the legs. Their flexibility makes spring calipers great for tasks where leg distances change often.

Joint calipers are also differentiated by their legs:

• Inside calipers have legs that curve outward. The outward flare of the legs fits inside an opening and then expands to touch the internal sides for measurement. Inside calipers are a good choice for checking the internal diameter of precision tubes or inspecting the bore of engine cylinders.

• Outside calipers have legs that curve inward and have a teardrop shape when closed. The inward curvature of the legs makes it possible to grasp the outside contours of an item. They would work to check the uniformity of turned metal shafts or the thickness of brake discs.

• Dividers have completely straight legs that end in sharp points. Use dividers to mark workpieces rather than compare measurements. Their points can score circles and arcs or transfer measurements from a ruler to a workpiece.

Top-Rated Product Recommendations:

• MITUTOYO Electronic Caliper: 0 to 6", 0.0005" Resolution

• MITUTOYO Dial Caliper: 6'' Range, 0.001'' Graduation, 0.1'' per Revolution

• SPI Electronic Caliper: 0 to 6", 0.0005" Resolution

• SPI Dial Caliper: 6'' Range, 0.001'' Graduation, 0.1'' per Revolution