Dial Caliper MEGA 150 mm / 0.02 mm - model 20512

Dial Caliper MEGA 150 mm / 0.02 mm - model 20512 is a mechanical measuring tool designed for manual precision measurement of external, internal and depth dimensions. The caliper features a 150 mm measuring range with a 0.02 mm dial graduation and an analog dial indicator that gives a clear, continuous readout. Constructed for routine workshop metrology, quality control and precision fitting tasks, this caliper provides tactile control and visual feedback without the need for batteries.

Advantages

The mechanical dial display delivers a readable analog indication with 0.02 mm resolution and immediate response to jaw movement. The 150 mm range covers common small-to-medium workpieces while the tool's hardened measuring faces resist wear for stable results over time. The caliper's simple mechanical design reduces dependency on electronics, making it suitable for environments where durability and straightforward operation are required.

Suitable for

• External diameter and length measurements of shafts, rods and profiles
• Internal diameter checks of bore holes and housings
• Depth measurements for steps, recesses and grooves
• Workshop metrology and incoming inspection of parts

Key specifications

• Measuring range: 150 mm
• Resolution: 0.02 mm (dial graduation)
• Measurement types: external, internal, depth
• Display type: mechanical dial indicator (analog)
• Measuring faces: hardened steel
• Locking screw for stable measurements

How to use

Hold the caliper by the beam and bring the jaws into contact with the workpiece surface for external measurements or open the internal jaws inside a bore for internal checks. For depth measurements, use the depth rod by extending it into the recess until the base of the caliper rests on the reference surface. Read the value from the dial indicator, interpreting the dial graduation for the fractional part and the main scale for full millimetres. Use the locking screw to fix the jaw position before removing the tool for reading or recording.

Usage recommendations

Store the caliper in a protective case when not in use, keep measuring faces clean and free of debris, and avoid applying excessive force to the jaws. Periodically check zero alignment on a reference gauge and avoid exposure to aggressive fluids or extreme temperatures to maintain accuracy and service life.