The universal pen for overhead projectors and almost all surfaces — awarded the Long Life Design Award
• DRY SAFE: The pen can be left open for days without drying out (ISO 554 approved)
• Airplane-safe: an automatic pressure equalisation stops the pen leaking on aeroplanes
• Superbly smear-proof and waterproof on almost all surfaces
• Permanent, low-odour ink
• Excellent colour brilliance
• Stroke width 0.6 mm
• Colour blue
