A very kind thank you to to Brian Goulet and Inventery for supplying most of these products! I thought it would be interesting to do a quick overview of some of the rollerballs that you can purchase that actually use fountain pen ink, because sometimes a fountain pen just won’t work you just have to use a rollerball.
This pen was kindly lent to me by Joost Appelboom. Don’t forget to click the Appelboom banner on the right to obtain a 10% discount on your order (excluding Montblanc).
Measurements
Length (capped): 149.6 mm/5.89”
Length (uncapped): 137.2 mm/5.40”
Length (posted): N/A
Diameter (section): 11.1 – 13.0 mm/0.44” – 0.51”
Diameter (barrel): 13.0 – 15.9 mm/0.51” – 0.63”
Weight (all): 34 g
Weight (cap): 18 g
Weight (body): 16 g
This pen was kindly sent to me by Laban!
Measurements Length (capped): 150.0 mm/5.91″ Length (uncapped): 131.3 mm/5.17″ Length (posted): 172.3/6.78” Diameter (section): 10.0 – 12.1 mm/0.40″ – 0.48″ Diameter (barrel): 10.1 – 13.7 mm/0.42″ – 0.54″ Weight (all): 36.0 g Weight (cap): 22.5 g Weight (body): 13.5 g 
I won this pen case in a giveaway that was co-organized by Dr. Joseph M. Vitolo and Emy of Pen Venture. This case will be given away in the future.
This pen was kindly sent to me by Nino of Maiora Pens, the creator of these new Nettuno pens.
Measurements
Length (capped): 135.7 mm/5.34″
Length (uncapped): 130.6 mm/5.14″
Length (posted): 159.55 mm/6.28″
Diameter (barrel): 11.0 – 13.4 mm/0.43″ – 0.53″
Diameter (section): 10.9 – 11.3 mm/0.43″ – 0.45″
Weight (all): 39 g
Weight (cap): 12.5 g
Weight (body): 26.5 g
These leather goods were kindly sent to me by Carl of Morgan Esq.
This pen was sent to me by a kind viewer!
Measurements
Length (capped): 179.0 mm/7.08″
Length (uncapped): 169.0 mm/6.65″
Length (posted): N/A
Diameter (section): 10.2 – 12.1 mm/0.40″ – 0.47″
Diameter (barrel): 0.3 – 12.6 mm/0.13″ – 0.50″
Weight (all): 14.5 g
Weight (cap): 11.0 g
Weight (body): 3.5 g
I gave this pen to a friend before I took pictures… but it is a pen that looks like a lime coloured shark…
