Uni Mitsubishi Hi-Uni H Pencil – Box of 12 | Precision Sketching & Technical Drawing

Uni Mitsubishi Hi-Uni H Pencil – Box of 12

For artists and draughtsmen who demand control, the Uni Hi-Uni H pencil is engineered for precision. Harder than HB, the H grade produces crisp, fine lines that hold their edge longer — perfect for architectural sketches, technical illustration, light underdrawing, and detailed linework where accuracy is everything. Made in Japan by Mitsubishi Pencil Co., it brings the same legendary smoothness of the Hi-Uni range to a harder, more disciplined grade.

✦ Key Features

• H Grade – Hard & Precise: Produces lighter, finer lines than HB with greater point retention — ideal for technical drawing, architectural sketching, and detailed underdrawing
• Ultra-Smooth Graphite Core: Hi-Uni’s proprietary graphite formula delivers a surprisingly smooth glide even at this harder grade, avoiding the scratchy feel common in lesser H pencils
• Exceptional Point Retention: The harder graphite wears down more slowly, keeping your tip sharp longer between sharpenings — critical for fine detail work
• Break-Resistant Lead: Advanced core-bonding technology keeps the graphite firmly centered, preventing tip breakage even during precise, controlled strokes
• Premium Japanese Cedar Casing: Sharpens cleanly to a needle-fine point; the fine-grain cedar ensures a smooth, splinter-free sharpening experience every time
• Box of 12: Presented in the iconic Hi-Uni gold-foil box — a complete professional set for studio, drafting table, or classroom

✦ Specifications

• Brand: Uni Mitsubishi (Japan)
• Model: Hi-Uni
• Grade: H
• Quantity: 12 pencils per box
• Best For: Technical drawing, architectural sketching, underdrawing, fine linework, light shading
• Origin: Made in Japan

✦ Frequently Asked Questions

Q: What is the difference between H and HB in the Hi-Uni range?
A: HB sits in the middle of the hardness scale — balanced for general sketching and writing. H is one step harder, producing lighter, finer lines with better point retention. Artists use H for underdrawing, construction lines, and detailed linework where a sharp, controlled mark is needed without heavy graphite deposit.

Q: Is the H grade suitable for sketching, or is it only for technical drawing?
A: The H grade is excellent for both. In fine art, it’s commonly used for initial underdrawing (light construction lines that won’t show through ink or paint layers) and for rendering fine details and textures. In technical and architectural drawing, it’s a go-to for precise, consistent linework.

Q: Does the H grade feel scratchy on paper?
A: Not with the Hi-Uni. Many H-grade pencils from lesser brands feel harsh and scratchy, but the Hi-Uni’s proprietary graphite formulation maintains a notably smooth feel even at harder grades — one of the key reasons professionals choose it over alternatives.

Q: Can I erase H grade lines easily?
A: Yes. Because H grade deposits less graphite on the paper surface, it actually erases more cleanly than softer grades like 2B or 4B. This makes it especially useful for underdrawing that you plan to erase after inking.

Q: How does the Hi-Uni H compare to Staedtler Mars Lumograph H or Tombow Mono H?
A: The Hi-Uni H is widely considered the smoothest hard-grade pencil in its class. Professional illustrators and architects frequently cite it as superior to both the Staedtler Mars Lumograph and Tombow Mono in terms of graphite consistency and smoothness at harder grades.

Q: How many pencils come in the box?
A: Each box contains 12 Hi-Uni H pencils in Mitsubishi’s signature gold-foil presentation box.