The Fisher Space Pen refill fits the Robert Chambers Scriber. Available in Black and Blue ink. Medium Point. Fisher Space Pens work at ALL angles, and even write underwater. More than 10 years of field testing have proven these are the best ink pens for scribing logs. Two types are available for the Chambers Scriber. V.2 is the current version of the scriber that we sell as a kit. V.1 is the older version. Sold individually.
Note: If you are using the Robert Chambers V.2 Scriber or V.2 Arc Scriber with Pen Tubes, you can find the refills for them here.