Proster Digital Vernier Caliper, 8 Inch/200 mm Stainless Steel, Fractional Readout

For measuring jobs that involve more than one dimension, a digital calliper makes it easier to take inside, outside and depth readings with the same tool. The Proster Digital Vernier Caliper combines those measuring functions with metric, inch and fractional-inch modes. Its stainless steel construction and portable storage case suit regular use in automotive and industrial settings. The 0–200 mm range also gives it room for a variety of workshop measurements.

Benefits

Use the internal and external jaws to measure the inside or outside of an object, or use the depth blade for recesses and holes. The probe and jaw arrangement also support height and step measurements, so you can handle different checks without switching between separate measuring tools. For example, when checking a component, you can measure its outer width and then take a depth reading with the same calliper.

Choose between millimetres, inches and fractional inches to suit the measurement format you are working with. This is useful when a job, drawing or existing part uses a different unit system, and the practical conversion chart on the back offers a handy reference. The large LCD presents readings clearly, while the stated accuracy is 0.001 inches / 0.02 mm. Resolution is 0.0005 inches, 1/128 inches or 0.01 mm, depending on the display mode.

A simpler measuring approach may be enough for a single, straightforward dimension. This calliper is designed for work where access to internal, external, depth, height or step measurements—and a choice of units—makes one versatile tool more useful.

Quick overview

The Proster calliper measures from 0 to 8 inches and 0 to 200 mm. It is made from stainless steel and has an electronic display with three modes: mm, inch and fraction. The measuring jaws handle internal and external dimensions, a depth blade and probe extend its use to recesses, height and steps.

The set includes the electronic digital calliper, a durable plastic storage case, a mini screwdriver, a user manual and an additional LR44 battery. Keep the case with the tool between jobs to make storage and carrying straightforward, and use the supplied battery for a replacement when needed.

Getting the most from it

For a small part, position the relevant jaws around its inner or outer edge and read the measurement on the LCD. For a hole or recessed feature, use the depth blade, for a step, use the measuring surfaces suited to that change in level. Select mm, inch or fractional-inch display to match the units you need for the task. Keeping the jaws and probe aligned with the surfaces being measured helps make the reading relevant to the dimension you are checking.

Is it worth it?

It makes sense if your work calls for several types of measurement and you want to switch between metric, decimal-inch and fractional-inch readings on one tool. The 0–200 mm range, multiple measuring functions, LCD display and stainless steel body make this a practical choice for automotive and industrial tasks, as well as general workshop measuring. The included case helps keep the calliper together and ready to carry between jobs.