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The chart below is to assist you in converting from the old Ligne
system of crystal measurement to metric millimeters.

Ligne to Metric

Ligne 15 16 17 18 19 20 21
0/16 33.8 36.1 38.3 40.6 42.9 45.1 47.4
1/16 34.0 36.2 38.5 40.7 43.0 45.3 47.5
2/16 34.1 36.4 38.6 40.9 43.1 45.4 47.7
3/16 34.3 36.5 38.8 41.0 43.3 45.5 47.8
4/16 34.4 36.7 38.9 41.2 43.4 45.7 47.9
5/16 34.5 36.8 39.1 41.3 43.6 45.8 48.1
6/16 34.7 36.9 39.2 41.5 43.7 46.0 48.2
7/16 34.8 37.1 39.3 41.6 43.8 46.1 48.4
8/16 35.0 37.2 39.5 41.7 44.0 46.2 48.5
9/16 35.1 37.4 39.6 41.9 44.1 46.4 48.6
10/16 35.2 37.5 39.8 42.0 44.3 46.5 48.8
11/16 35.4 37.6 39.9 42.2 44.4 46.7 48.9
12/16 35.5 37.8 40.0 42.3 44.6 46.8 49.1
13/16 35.7 37.9 40.2 42.4 44.7 46.9 49.2
14/16 35.8 38.1 40.3 42.6 44.8 47.1 49.3
15/16 36.0 38.2 40.5 42.7 45.0 47.2 49.5

Simply find the Ligne size from the top of the chart and the fraction from the left
then follow both values as shown below to find the metric equivalent.

Conversion Chart Demo

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White's Crystal MFG
PO Box 460532
San Francisco, CA 94146
info@whitescrystals.com