Mechanical construction pencil GEKO model 250 with 6 leads — for carpentry and masonry marking

GEKO mechanical construction pencil model 250 is a purpose-built marking tool designed for carpentry and masonry tasks. The pencil features a rigid metal body and a fine mechanical lead that produces consistent, precise lines suitable for layout work, cutting guides and material marking. Supplied with six replacement leads, this model supports repeatable measurements and accurate transfer of lines on wood, brick, concrete and other common building materials.

Advantages

The solid construction of the GEKO model 250 provides durability for workshop and site conditions while maintaining stable line placement during use. The mechanical lead eliminates the need for frequent sharpening and ensures uniform line thickness. Included spare leads extend time between consumable purchases and make the tool ready for immediate use out of the box.

Suitable for

• Marking cut lines and guides on timber and sheet materials
• Transferring layout lines on masonry and concrete
• Marking joints, edges and trim locations during installation
• Site measurements and quick field sketches for builders and carpenters

Key specifications

• Tool type: mechanical construction pencil with replaceable lead
• Body: rigid metal construction suitable for workshop and site use
• Lead: thin mechanical lead for precise lines (supplied spare leads: 6 pieces)
• Primary applications: carpentry, masonry and general building marking

How to use

Load a replacement lead into the barrel according to the tool's feed mechanism and extend the lead to the required length. Hold the pencil at a low angle for marking on rough surfaces such as brick or concrete, or at a steeper angle for fine lines on wood and sheet materials. Use the pencil to scribe cut lines, transfer layout points and mark edges; replace leads as they wear to maintain consistent line quality. Store the pencil in a dry place when not in use to protect the metal body and the leads.

Usage recommendations

For best results, use appropriate grade leads for different materials: harder leads for precise layout on wood and softer leads for clearer marking on masonry. When marking on dusty or damp surfaces, wipe the area first to improve line visibility. Keep spare leads accessible on site to avoid interruptions during layout and cutting tasks.