Here are my drafting pencils. I use these when a ruler, T Square
or stencil is involved.
Left to right:
Rotring 800 in 0.7mm
Rotring 600 in 0.5mm
Rotring 500 - 0.5mm
Ohto Suoer Promecha 0.3mm
Ohto Conception 0.5mm
Platinum Pro use 171 -blue 0.3mm
Platinum Pro Use 171 black 0.3mm
Muji low center of gravity 0.5
Of all these I like the knurling on my Spoke 6 the best.
The snork system on the Pro-Use 171 is interesting but I get better results with 0.3 using my Orenz or Orenz Nero.
It’s a good second, but I’m only showing my knurled grip drafting pencils here.
The 171 always felt a bit out of place for a Platinum MP. It didn’t have any real carry over from the previous generation except for the styling of the name. I felt, it should have gone with a non-knurled grip, like its predecessors, in order to retain a differentiated identity. Honestly, it feels more like an Ohto!
The thickness and weight also feels a bit off for 0.3. In contrast, the even thicker Pro Use 1500 is quite nimble in use.
I have noticed that on both of my Pro-Use 171s, the snork system will “disengage” - seems that I am always having to twist the barrel to lock it back on when i first pick it up. Anyone else have that problem?