FastCap, a company known for their problem-solver innovations, offers a double-ended long nose permanent and waterproof marker that can get into areas most other markers cannot. It features a wide chisel point, and a long-reach fine point.
There are other marking tools that can do the same job as the 1-1/8″ fine point end, such as Parker pen gel ink refills, but they’re still not markers.
This seems like a great combo – a regular wide point for most applications, and a more accurate fine point for when tracing inner or outer edges, or for reaching into deep areas.
The long nose pen is priced at $6 plus shipping. That’s a little steep for a marker, so make sure you really need the long reach before you buy.