Invisible Ink UV Marker, Markal

This UV marker manufactured by Markal makes clear, invisible marks that will illuminate bright blue when viewed with an ultraviolet or black light. This marker writes on practically anything - metal, plastic, glass and ceramic surfaces. The ink is fast drying, and the marker is able to perform in temperatures from -46°C to 66°C.

Perfect for making a cache with "UV Light Required" attribute, for example for giving your multi cache waypoints a little bit of extra flare.

Measurements

• Marker length (with cap): 14.4 cm
• Mark size: 3 mm