Construction Markers
These German made markers are used widely in building construction and numerous other applications.
The DRY range uses a wax based compound solid marker refill similar to a propelling pencil which can be routinely sharpened by the built in sharpener.
The initially purchased marker has a black refill. Spare refills are available in Black, Red and Yellow.
The INK range are non-refillable and have permanent marker ink removable with methylated spirits. Available in Black, Red & Blue.
A major plus with the ink marker is that you can forget to recap for up to a day and it will recover.