Lanameter
A Lanameter (also Lanometer ) is a special projection microscope for measuring the diameter of wool fibers [μm]. Fiber diameter and fiber weight are the parameters for calculating the fiber fineness [dtex].
It was described by Döhner in 1929. Lanameter are part of the laboratory equipment for textile technology and testing.
Lanameter have a slide-like frame for taking samples in which the fibers are embedded in cedar oil between two glass plates. The projection on a ground glass screen usually had a magnification of 60: 1. Reference slides with known fiber diameters are often included.
However, today's devices also deliver other magnifications (for example 50: 1 and 500: 1.)
Individual evidence
- ^ Australian Wool Testing Authority LTD: Fundamental Principles of Fiber Fineness Measurement; Part 4: The Projection Microscope.
- ↑ schroeder-prueftechnik.de: Lanameter ( Memento from September 23, 2006 in the Internet Archive ).