Compass leads KOH-I-NOOR, 4872

KOH-I-NOOR 4872 Compass Leads – Precision in Every Circle

Manufacturer: KOH-I-NOOR Hardtmuth
Diameter: 1.9 mm

There is nothing more frustrating than a compass lead breaking mid-drawing or producing faint, blurry lines. KOH-I-NOOR 4872 leads are the standard trusted by both geometry students and engineering professionals. These replacement graphites ensure your tool is always ready for duty.

Technical Summary (Specifications)

• Product Type: Replacement graphites (leads) for compasses.
• Model: KOH-I-NOOR 4872.
• Graphite Diameter: 1.9 mm.
• Graphite Length: 19 mm.
• Quantity: 10 pcs.
• Purpose: School and technical drawings.

1. Writing Quality and Material Strength

The Czech manufacturer KOH-I-NOOR is world-renowned for its graphite quality, and the 4872 model is no exception. During testing, we noted several key advantages:

• Break Resistance: The graphite is sufficiently elastic so that even under pressure when drawing thick lines, the lead does not snap.
• Optimal Pigmentation: These leads leave a clear, rich line on paper that is easy to read yet easy to erase with a standard eraser if needed.
• Uniform Structure: The graphite lacks hard impurities that could scratch the surface of the paper.

2. Standard Dimensions and Compatibility

These compass graphites are built for versatility. While they fit KOH-I-NOOR compasses perfectly, their parameters allow them to be used with most drawing tools on the market:

• Diameter (1.9 mm): This is the most common standard for medium-sized school and technical compasses.
• Length (19 mm): The optimal length ensuring stable fixation in the holder and a long usage life.

3. Economy and Packaging

By purchasing the pack of 10 (10 units), you ensure a long-term supply. This is particularly relevant during the school year, as leads often get lost or wear down during intensive homework preparation. The compact packaging fits easily into any pencil case.

Verdict

KOH-I-NOOR 4872 is the most reliable choice for those seeking quality at an affordable price. It is an essential accessory for anyone using a compass – from fifth graders to architects. If you value clean drawings and tool durability, these leads will not disappoint.

Frequently Asked Questions (FAQ)

Will these leads fit any compass?

They fit all compasses that use standard 1.9 mm diameter leads. This includes most metal and plastic school compasses.

Are these leads easy to sharpen?

Yes, the leads can be sharpened using specialized sandpaper or mini-sharpeners often found in compass sets to achieve ultra-fine lines.

What is the hardness of this graphite?

While the manufacturer specifies general use, they feel similar to the medium-soft (HB) standard, perfect for both writing and technical drawing.