Pentel 120 A3DX Drafting Mechanical Pencil

Pentel 120 A3DX Drafting Mechanical Pencil

The Pentel 120 A3DX Drafting Mechanical Pencil is a classic technical drafting instrument engineered for draftsmen, architects, engineers, and everyday stationery enthusiasts who demand uncompromising precision. Built around a fixed 4mm stainless steel lead guide pipe, the A3DX ensures uninterrupted ruler-edge tracing and clear sightlines on detailed line work. Its contoured metallic grip section provides dependable tactile control and fatigue-free writing comfort during extended sketching or note-taking sessions.

Key Features

• Fixed 4mm Drafting Sleeve: Designed with an extended guide pipe that protects fine lead against breakage and aligns perfectly against straightedges and drafting templates.
• Knurled Metallic Grip: Engineered with a textured metal gripping zone to deliver confident fingertip traction and a well-balanced center of gravity.
• Versatile Lead Diameter Options: Available in 0.3mm, 0.5mm, 0.7mm, and 0.9mm configurations to match ultra-fine technical sketches and bold everyday writing.
• Integrated Refillable Eraser: Features a discreet emergency eraser beneath the push button cap, fully compatible with Pentel Z2-1N replacement erasers.
• Robust Pocket Clip: High-tensile steel clip secures firmly to drafting boards, notebook covers, and pocket organizers for convenient daily carry.

Specifications

• Brand: Pentel
• Model: 120 A3DX
• Lead Sizes: 0.3mm, 0.5mm, 0.7mm, 0.9mm
• Mechanism: Push-button top advance mechanism
• Grip Material: Textured metal grip
• Barrel Material: High-grade resin with metallic accents
• Sleeve Length: 4mm fixed guide pipe
• Eraser Refill: Pentel Z2-1N
• Country of Origin: Japan

Frequently Asked Questions

• What makes the Pentel 120 A3DX ideal for drafting and technical drawing?
  The pencil incorporates a rigid 4mm guide pipe that prevents lead snapping against template edges while granting full visual clarity over technical lines.
• Which lead size should I choose?
  The 0.3mm size provides hairline precision for intricate diagrams, 0.5mm is the standard for everyday writing and drafting, 0.7mm offers bold, break-resistant lines for general notes, and 0.9mm excels in expressive sketching and heavy-handed marking.
• Can the eraser be replaced once worn down?
  Yes, removing the push cap exposes the built-in eraser, which is easily replaced using standard Pentel Z2-1N eraser refills.
• What lead refills work best with this mechanical pencil?
  It accommodates any standard graphite lead refills of corresponding diameter, including Pentel Ain Stein and Super Hi-Polymer leads.
• Is the lead advance mechanism fully metallic?
  Yes, the internal clutch mechanism is precision-milled from brass to guarantee consistent lead feeding and dependable grip strength without slipping.