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This item: Uni-ball Signo RT UM-138 Gel Ink Pen - 0.38 mm - Black - $1.65
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|Model Number||UNI UMN103.24|
|Shipping Weight||0.35 oz|
|Diameter - Grip||9.6 mm|
|Diameter - Max||10.6 mm|
|Length - Extended||13.8 cm|
|Length - Retracted||13.9 cm|
|Pre-Installed Ink Color||Black|
|Tip Length||4.4 mm|
|Tip Size||0.38 mm|
June 8, 2011
While the 0.38mm tip...
While the 0.38mm tip writes fine lines, I am rather disappointed in the ink reservoir. If you pay close attention, the inner diameter on the refill is much smaller than most normal refillable pens which explains why these pens have such a short lifespan. The inner diameter on this refill is 2mm (approximately 3/32”) whereas other pens, like the Zebra Sarasa or the Uni-ball Signo 0.5mm, have a much wider inner diameter. These pens have a 5mm (approximately 5/32”) inner diameter, resulting in 2.5 times more ink than the Signo 0.38mm RT. It’s a great price, especially for those who love super fine tips. Me? I’ll take the extra ink with a 0.5mm tip.
5 people found this helpful
January 18, 2012
To the guy who is complaining...
To the guy who is complaining about the reservoir size. It isn't that the .38 size has a smaller reservoir in particular, it's that the retractable signo's as a model have a smaller reservoir. Any size of signo DX models will have the same size reservoir. If you want .38 and still want a big reservoir go look at the .38 signo DXs. They also come in .28 and .5 btw. Anyways, the pen itself has been good to me as all the models of signo I've tried have been. Other than that sometimes not having to worry about a cap can be a good thing. Also, the grip is farther down the pen, which is better for me because I hold pens closer to the tip, which with the Signo DX model is pretty far up so I end up holding past the grip anyways.
4 people found this helpful
August 20, 2013
This is a good, smooth...
This is a good, smooth writing, precise pen. I will agree that the ink quantity is small and I used up each and every last bit of ink in these pens because I love writing with them. Especially in my lab notebook, since they're waterproof. When I resorted to a Pilot G-2 after this pen died the ink ran like crazy at the slightest drop of water.
It's a pity the refills for this pen are actually more expensive than the pen itself, or I'd just get the refills.
Either way, don't pretend that this pen will last forever and buy a good half dozen because you'll like it.
April 28, 2013
Great retractable pen,...
Great retractable pen, the 0.38 line is more like a 0.5 line, which in my opinion is better. As most of the cases, the clip is very fragile, look for the Zebra Sarasa Clip or Pilot Juice, which have a metal mechanism for more versatility in the clip.
June 8, 2012
Good pen for writing...
Good pen for writing English, Chinese or Japanese. Good control, smooth and even. Good price too.