INSIZE Angle Gauge 75x50 mm KATOWNIK MKSA Class 0, model 4791-75

INSIZE Angle Gauge 75x50 mm KATOWNIK MKSA Class 0, model 4791-75 is a precision right-angle reference tool designed for inspection, layout and angular verification in workshops and laboratories. With nominal faces of 75 mm and 50 mm, and MKSA unit graduations, this Class 0 angle gauge delivers tight angular accuracy required for metalworking, machining and quality-control processes where reliable 90° references are needed.

Advantages

The Class 0 calibration level ensures higher accuracy and lower deviation when checking right angles compared with lower classes. The compact 75 x 50 mm size offers a stable reference surface while remaining convenient to position on small workpieces and fixtures. MKSA unit markings allow measurements and comparisons in standard metric units, and the rigid construction minimizes deformation during normal workshop handling.

Suitable for

• Inspection and verification of 90° angles on machined parts
• Layout and marking for assembly and welding
• Quality control in metalworking and manufacturing environments
• Laboratory calibration tasks requiring a Class 0 angular reference
• Setting up fixtures and jigs for precise alignment

Key specifications

• Nominal dimensions: 75 mm × 50 mm
• Accuracy class: Class 0
• Unit system: MKSA (metric) graduations
• Functional type: Right-angle/angle gauge for 90° reference
• Intended use: Inspection, layout, verification and alignment

How to use

Place the INSIZE 75×50 angle gauge against the faces to be checked so that both reference edges sit flat on the mating surfaces. Ensure the gauge is free of debris and the workpiece surface is clean before taking measurements. Use visual inspection, feeler gauges or a dial indicator as required to quantify deviation from 90°. For layout tasks, align the gauge edge with marking tools or scribing points to transfer the right-angle reference onto the workpiece.

Usage recommendations

Store the gauge in a protective case or on a clean, dry surface to prevent nicks and corrosion. Calibrate or verify the angle gauge periodically according to your quality-control schedule to maintain Class 0 accuracy. Avoid excessive clamping force or impacts that could distort the reference edges.