The pencil lead of the utility model is quadrangular prism shape (square cross section), which has the advantages that regrinding is not needed when line drawing; the lines with uniform width which meets the national standard of engineering drawing can be drawn directly; time is saved and work...
Forged from Grade 5 titanium and shaped through 135 machining stages, the case is as strong as it is light. A double-domed sapphire crystal frames the hexa-prism display, while the 2.5mm sapphire case back reveals its rhythmic core. Super-LumiNova coatings bring the MANTA-X to life in dark...
Forged from Grade 5 titanium and shaped through 135 machining stages, the case is as strong as it is light. A double-domed sapphire crystal frames the hexa-prism display, while the 2.5mm sapphire case back reveals its rhythmic core. Super-LumiNova coatings bring the MANTA-X to life in dark...