Caliper AWTools AW28030 — analog measuring caliper, model AW28030, weight 297 g

AWTools AW28030 is an analog measuring caliper constructed from stainless steel, designed for precise linear measurements in workshops, inspection tasks and do-it-yourself projects. The caliper supports external and internal dimension measurement, step and depth measurement, and features a scale with metric and inch conversion. The tool weighs 297 g and is supplied with a storage case for protection and transport.

Advantages

The stainless steel construction provides corrosion resistance and long-term durability for regular workshop use. A large LCD display presents measurement values clearly while thumb rolling and a locking screw enable smooth sliding, accurate positioning and fine adjustment. The scale offers both metric and inch readings for versatile use. The caliper includes a low battery warning that flashes the display when voltage falls below 1.45 V and an automatic power-off to conserve battery when the instrument is not in use.

Suitable for

• Measuring external diameters and lengths of parts
• Measuring internal diameters of holes and slots
• Checking depths and step heights in assemblies
• Workshop inspections and quality control tasks
• Home DIY projects where battery-free mechanical operation or simple reading is needed

Key specifications

• Material: stainless steel
• Measurement functions: external, internal, step and depth measurements
• Scale: metric and inch conversion
• Display: large LCD
• Adjustment: thumb rolling and locking screw for fine positioning
• Power features: low battery warning (flashing display below 1.45 V) and auto-off after inactivity
• Weight: 297 g
• Includes storage case

How to use

Open the caliper jaws and place the object between the external jaws to measure outside dimensions, or insert the internal jaws into a hole to measure inside dimensions. Use the depth blade for depth measurements and the step surfaces for step heights. Advance the sliding jaw with the thumb roller until contact is made, then secure the reading with the locking screw for repeatable measurement. Read values on the LCD display and switch between metric and inch units as required by your task.

Usage recommendations

For accurate results, ensure measuring surfaces are clean and free of debris, and avoid excessive force when closing the jaws. Store the caliper in the supplied case when not in use to protect the scale and display. Replace the battery when the display flashes to maintain reliable operation; the auto-off feature helps preserve battery life.