Layout square with base Helios Preisser mksc 150x100 mm (model 0374408)

Helios Preisser layout square with base mksc 150x100 mm is a precision metalworking square designed for marking, checking and aligning edges and surfaces with a fixed 150 x 100 mm leg configuration. The square includes an integrated base for stable positioning on flat or slightly curved workpieces, enabling accurate right-angle checks, assembly alignment and repeatable layout operations in workshop environments.

Advantages

The square provides stable contact through its dedicated base, reducing movement during marking and inspection. Its fixed leg dimensions ensure consistent 90° geometry without the need for adjustments, and the rigid metal construction offers durability and resistance to deformation under normal workshop use. The tool is compact and straightforward to handle, allowing fast placement and visual verification of squareness on a variety of components.

Suitable for

• Marking and scribing right angles on metal plates and parts
• Checking squareness during assembly and fitting operations
• Quality control inspections for edges and corners
• Layout work in fabrication, welding and machining setups

Key specifications

• Leg dimensions: 150 mm × 100 mm fixed configuration
• Material: hardened metal body for rigidity and wear resistance
• Integrated base for stable positioning on workpieces
• Intended use: marking, checking and aligning edges and surfaces at 90°
• Compact size suitable for bench and workshop use

How to use

Place the square with its base flat against the workpiece so the two legs align with the surfaces to be checked or marked. Ensure full contact between the base and the workpiece to prevent tilt, then scribe or mark along the outside edge of the leg for layout lines. For checking squareness, visually inspect the contact lines or use a feeler gauge to detect gaps. When using near welded or irregular surfaces, clean the contact area to improve stability and accuracy.

Usage recommendations

Store the square in a dry, protected place to avoid corrosion and mechanical damage. Periodically check the tool against a calibrated reference or surface plate if high precision is required. Avoid heavy impacts and use correct handling to maintain the fixed 90° geometry.