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The L H Dottie CO 305 is a rust-proof, paint-safe marking tool designed for use across a wide range of trade and industrial applications. Built to leave clear, visible marks without damaging painted or coated surfaces, this marker is a practical addition to any technician's or installer's kit. Its any-way tip design allows marking at any angle, including upside down, making it well suited for tight access areas common in HVAC, plumbing, and electrical work. The unit is sold individually and is appropriate for job-site use where surface-safe marking is required.
This marker is commonly used by HVAC technicians, electricians, plumbers, and general trade professionals who need to label components, mark cut lines, or identify equipment without risking surface damage. Its rust-proof construction makes it a reliable choice in humid or wet environments such as mechanical rooms, crawl spaces, and outdoor equipment installations. The paint-safe formulation means it can be used on finished enclosures and panels without leaving residue that compromises coatings.
Designed as a general-purpose marking tool suitable for use on a wide variety of surfaces encountered in HVAC, plumbing, electrical, and mechanical trade applications.
No installation is required for this marking tool. Store with the cap secured to prevent drying. For best results on porous or dusty surfaces, clean the area lightly before marking. Dispose of spent markers in accordance with local regulations.
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