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What is the thickness of the daily pen?
1, F(0.5) nib for daily use * * * can be divided into eight grades (from fine to coarse), namely: e F, f, m, om, OB, OBB, b and BB. EF=0.4~0.5MM, recommended for daily use, suitable for Chinese writing. F=0.6~0.7MM, both English and Chinese are suitable for sketching and daily use.

2. The pen is a writing tool that hides water-based ink in the pen holder and continuously supplies ink to the pen tip through gravity and capillary action. It was invented at the beginning of19th century. Most pens can be refilled with ink. The common ink refilling methods include replacing ink cartridge, piston inking, ink absorber, bag inking, pull rod inking or, more rarely, submarine inking. Some users also use syringes to inject ink into the ink tube of the ink cartridge for reuse.

3. The nib can be said to be the most critical part of the pen. It varies from fine to thick. Generally, the most common nib size is "B, M, F, EF", and from coarse to fine is B > M>F & gtEF. There will be some differences in the specifications of the nib size of each pen manufacturer. Under the same size unit, the Japanese pen will be thinner than the European pen.

According to the usual writing habits, westerners usually use M nib as the main pen, and choose B nib when signing. Due to the complexity of Chinese writing strokes, M, F or thinner EF pen tips can generally be used.