Deli 150mm Vernier Caliper, Suitable for Accurate Inside, Outside & Depth Measurements

Key features include a 150 mm stainless steel scale for durability, a large easy-to-read main scale, a locking screw to hold measurements, a sliding jaw for smooth movement, and a depth probe for measuring holes or recess depths.

You can take external measurements (across the outside surfaces), internal measurements (across the inside diameters), and depth measurements (depth of holes or recesses) using the built-in depth probe.

The caliper is 150 mm in length, made from stainless steel for corrosion resistance and durability, features a locking screw to hold readings, a sliding jaw for accurate positioning, and includes a depth probe for depth measurements.

First clean the jaws and zero the caliper on a flat reference. Open the jaws to fit the object, then read the main scale for the whole millimeters and the Vernier scale for the fractional part. Align the Vernier mark with a line on the main scale to determine the precise measurement, and use the locking screw to hold the reading if needed.

Read the main scale for the whole millimeters and then check the Vernier scale to find the exact fraction of a millimeter where the marks align best. The combined result gives you the precise measurement across external, internal, or depth readings.

Wipe the caliper clean after use to remove dust and oils, avoid dropping it, and store it in its case or a protective area. Periodically inspect the locking screw and sliding jaw for smooth operation, and keep the measuring faces free of grit to preserve accuracy.

It’s well-suited for woodworking tasks (measuring dowel diameters or tenon thickness), metalworking (checking workpiece dimensions), automotive work (checking piston rings or brake components), and general engineering tasks requiring precise dimensions.

If you’re evaluating similar Vernier calipers on Fepy, you can also consider options like the Deli DE-EDL92140 Vernier Caliper 150MM and the Deli DE-EDL90150 Vernier Caliper 150MM to compare features such as build quality, measurement range, and included extras. See the alternatives here: https://fepy.com/product/deli-de-edl92140-vernier-caliper-150mm and https://fepy.com/product/deli-de-edl90150-vernier-caliper-150mm

This caliper is a solid choice for professionals and hobbyists who need reliable, mid-range precision for a variety of measurement tasks. Its stainless steel construction, 150 mm range, depth probe, and locking screw collectively offer good durability and ease of use for common measurement jobs without paying for premium features you may not need.

Start by ensuring the caliper is clean and zeroed on a flat surface. Practice measuring external dimensions, then internal dimensions using the inside jaws, and finally depth measurements with the probe. Use the locking screw to fix measurements when transferring to other tasks to maintain accuracy.