Caliper AWTools AW18836BL — precision measuring tool, manual vernier caliper, stainless steel

The AWTools AW18836BL caliper is a manual vernier measuring instrument crafted from stainless steel for stable, corrosion-resistant use. It provides precise linear measurements of external and internal dimensions as well as depths, with a vernier scale for fine reading. Designed for general workshop and machining environments, the caliper offers reliable mechanical measurement without batteries or electronics, making it suitable for long-term field and bench use.

Advantages

Stainless steel construction ensures durability and resistance to wear and corrosion. The vernier scale delivers accurate, repeatable readings for small increments. A robust sliding mechanism and clear engraved scale markings provide consistent measurement alignment. The tool’s manual design removes dependence on power sources and electronics, simplifying maintenance and reducing failure points.

Suitable for

• Measuring external dimensions of parts and profiles
• Measuring internal diameters and slot widths
• Measuring depths of holes, recesses and steps
• Workshop inspection and quality control checks
• Hobbyist projects and small-scale machining

Key specifications

• Measurement type: manual vernier caliper for linear, internal, external and depth measurements
• Material: stainless steel frame and jaws for corrosion resistance
• Scale: vernier graduated scale for fine resolution readings
• Operation: mechanical sliding rule with locking screw for stable readings
• Power: none required — fully mechanical operation

How to use

To measure external dimensions, gently close the jaws around the object and ensure the jaws make full contact without excessive force, then read the main scale and vernier alignment for the measurement. For internal measurements, insert the smaller jaws into the opening and expand until they touch the internal faces, then read the scales. To measure depth, extend the depth rod into the hole or recess until the base of the caliper sits flat on the reference surface and read the indicated value. Use the locking screw to secure the sliding jaw when you need to maintain a reading while transferring or recording the measurement.

Usage recommendations

Keep the caliper clean and dry; wipe jaws and scale with a soft cloth after use and apply light corrosion inhibitor if stored in humid conditions. Avoid dropping or applying heavy impact to the sliding mechanism. Calibrate or check accuracy against a reference gauge periodically, and avoid exposure to strong acids or abrasive chemicals that could damage engraved markings.