01 / 01STAEDTLER
Staedtler Lumocolor® duo 348 Double-Ended Permanent Marker
DOUBLE-ENDED (F & M) PERMANENT FIELD MARKERTwo-in-one double-ended permanent marker combining a fine 0.6mm tip for detailed survey notes and a medium 1.5mm bullet tip for bold specimen marking in a single robust tool.
Tip ConfigurationDual tips — Fine bullet tip (~0.6 mm) and Medium bullet tip (~1.5 mm)
Ink PropertiesPermanent, waterproof, smudge-resistant, low odor, xylene and toluene-free
Configuration, availability and delivery confirmed with your quotation.
01 / FIELD CAPABILITIES
Built for the task.
- Dual-tip design eliminates carrying multiple pens, enabling quick toggling between fine notation and bold rock marking
- 0.6mm fine tip allows neat microscopic numbering directly onto thin-section glass slides and specimen tags
- 1.5mm medium tip delivers high-visibility labeling across large polyethylene sample collection bags
- Fast-drying permanent ink prevents smudges when logging samples in damp outdoor weather
- Airplane-safe mechanism ensures leak-free air transport across remote exploration expedition sites
02 / TECHNICAL DETAILS
Precision, specified.
- Tip Configuration
- Dual tips — Fine bullet tip (~0.6 mm) and Medium bullet tip (~1.5 mm)
- Ink Properties
- Permanent, waterproof, smudge-resistant, low odor, xylene and toluene-free
- Drying Time
- Dries in seconds, highly recommended for left-handed field personnel
- Surface Compatibility
- Rock specimens, plastic sample containers, glass slides, metal stakes, acetate film
- DRY SAFE
- Can be left uncapped for days without drying out
- Flight Protection
- Automatic pressure equalization prevents leaks on aircraft
- Barrel Construction
- Sturdy PP barrel with color-coded dual end caps
- Country of Manufacture
- Germany
- Total Length
- 145 mm
- Weight
- 12 g
Key specifications and field-use details. Exact configuration may vary by model or selected variant.
Staedtler
Renowned drafting, mapping, and indelible pigment liner pens designed for professional accuracy.
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