How Falsified Diameters Cost You Fish and Money

How anglers are misled into believing that a line is stronger that it, is blatant deception, and shocking that it is practiced by many companies that should value their reputation more highly.

On the face of it it is bad enough when you look a simple diameter comparison. It is even worse when you consider how much thicker the line is in two dimensions.

As an example we take one of the lines above and show how much thicker the line actually is than it claims both in diameter and in cross section.

Diameter Variation Comparison of two different lines claiming to be 0.10mm

So this seems pretty clear. A well known match line states that the diameter is 0.10mm but when measured it is actually 0.134mm - 34% thicker than stated.  Fairly outrageous you say. Particularly when they sell a 0.11 a 0.13mm in their range.

The Actual diameter width is 34% greater than stated.

But wait it gets worse. We are measuring in one direction here. The line is thicker in ALL directions. So the thickness of the line is not 34% more it is 79% more! Just think how this will effect your presentation and  catch rates.

Cross Section Variation Comparison two different lines claiming to be 0.10mm

The cross section area is 79% greater than stated.

Many anglers realise this and avoid these sort of line or allow for their inaccuracy. Many anglers however don't which means they cannot make accurate choices and therefore are at a disadvantage particularly in match fishing situations where money is involved.

It is quite possible for any manufacturer to maintain his tolerances to within  5%.

The above calculations are made by using the basic formula for area of a circular cross section TTr²