This Jobsworth is made from Conway Stewart Classic Green vintage resin. It is shown fitted with a JoWo No6, medium polished steel nib and other options are available on request.
The 1313 is a medium sized pen with no step between the 13mm cap threads and the remainder of the barrel. The grip section is slightly pinched to ≈12mm diameter at its narrowest point. As these pens are all hand made there may be small variations on measurements.
Length - Capped = 137mm, uncapped = 132mm
It can be filled with an international standard sized converter or cartridge, and one of each is provided with the pen.