Ohto Mechanical Pencil MS01

The Ohto MS01 is a mechanical pencil machined entirely from metal for 0.5 mm leads – successor to the Promecha series and engineered consistently for precision and durability. The housing is crafted from black lacquered aluminium with a knurled grip section, complemented by chrome-plated brass and steel components. At 27 grams, it sits noticeably substantial in the hand without causing fatigue – a pencil that actively supports your drawing and writing.

Features

• All-metal construction from aluminium, brass and steel – the only plastic component is the internal lead sleeve. This gives the pencil millimetre-level precision and a lifespan far exceeding most mechanical pencils.
• Knurled aluminium grip, approximately 10 mm diameter – the knurling grips securely without the pattern becoming uncomfortable during extended use. Ideal for fine, controlled lines in technical drawing or precise sketching.
• Cylindrical shaft, black lacquered, approximately 7.5 mm diameter – the uniform, understated form allows smooth control even during long working sessions.
• Stainless steel pocket clip – robust enough for daily bag and notebook use without bending.
• Chrome-plated metal push button with lead size marking on the end cap – if you use multiple pencils, you can see at a glance which lead is loaded. The button is removable and reveals a replaceable eraser with integral lead-clearing tool.

Use & Tips

• Technical drawing and architectural sketching: The 27 g weight stabilises your hand and reduces tremor. The slim shaft allows close tracking along rulers and guides.
• 0.5 mm leads in HB through 2H deliver sharp, crisp lines on smooth paper; softer grades (B, 2B) work well for freehand sketching with more expression.
• The lead-clearing tool inside the eraser is not a replacement for dedicated cleaning equipment – it keeps the lead channel clear if a lead breaks and jams. Practical for everyday use without needing extra tools at hand.
• The removable clip allows you to use the pencil without it – for instance when rolling it across the drawing surface or if you prefer a cleaner look.

For Mechanical Pencil Enthusiasts

The MS01 follows the tradition of Japanese engineer's pencils, where weight and balance point are deliberately calibrated. The gripper, lead collar and tip are brass – a material that permits precision manufacturing and maintains tolerances over years without degradation. The aluminium housing provides subtle damping whilst still delivering clear feedback through the lead onto paper. Those working with lead guard pencils will appreciate the defined lead projection: the lead extends only as far as the mechanism permits – no uncontrolled run-out. The MS01 pairs beautifully with smooth, calendered drawing and writing papers and works with standard 0.5 mm leads from all major manufacturers.

Technical Specifications