Carpenter Pencil GEKO G29012 180 mm HB — wood marking pencil, flat rectangular body

GEKO carpenter pencil G29012 is a 180 mm HB wood marking pencil engineered for reliable marking on construction sites. The pencil’s flat rectangular body prevents rolling on work surfaces and offers a stable grip for precise, straight-line marking on timber, drywall, masonry and other building materials. The HB lead provides a balance between darkness and durability, making it suitable for layout lines, cut marks and general site notation. The pencil is compatible with standard carpenter sharpeners and can be shaped with a knife for custom line thickness.

Advantages

The flat rectangular design reduces slipping and rolling, allowing consistent placement on angled or uneven surfaces. The 180 mm length gives a comfortable working reach while remaining compact for storage in pockets or tool pouches. HB lead delivers clear, visible marks that resist smudging during handling yet are easy to remove or sand off when necessary. The wooden body is compatible with conventional sharpening methods, including pocket knives and specialized sharpeners used in carpentry.

Suitable for

• Marking timber and boards for cutting and joinery
• Layout lines on drywall, plasterboard and sheet materials
• On-site measurements and temporary notations in building projects
• Carpentry, woodworking and general construction tasks

Key specifications

• Length: 180 mm
• Lead grade: HB
• Body shape: flat rectangular to prevent rolling
• Material: wooden pencil body with graphite core
• Compatibility: suitable for standard carpenter sharpeners and knife sharpening

How to use

Hold the GEKO carpenter pencil with the flat side resting on the workpiece to stabilize the tool when drawing straight lines. For fine lines, sharpen the lead with a standard carpenter sharpener or carefully pare the tip with a knife for a chisel edge. Apply moderate pressure to produce clear marks without breaking the lead; for darker or broader lines, angle the pencil to expose more lead. When finished, store the pencil in a dry place or a tool pouch to protect the wooden body and preserve the tip.

Usage recommendations

Use protective gloves and eye protection when shaping the pencil tip with a knife. For precise joinery marks, re-sharpen frequently to maintain a consistent line width. Avoid prolonged exposure to moisture to prevent swelling of the wooden body and degradation of mark quality.