Hand Sewing Thread Thickness

[malchik]

Since I started with leatherworking I was confused by measurement of the linen thread. Even though I understand rationale behind certain measurement systems I found rather difficult to make comparisons between different measurements. I'm using mostly Fil Au Chinois but sometimes (when I don't have a time to wait for shipment from France) I'm using Campbells, Barbour, etc. Sometimes I just need thinner thread than Fil Au Chinois produces or the thickness I need for job that comes sporadically (French thin threads are blody expensive!) So, I made some table that compares two measurement systems with thickness in mm (aprox.) in parentheses.

Babour | Fil au Chinois

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12/3 (1)

18/5 (0.9)

332 (0.77)

18/3 (0.6) 432 (0.63)

532 (0.57)

20/3 (0.52) 632 (0.51)

30/3 (0.45) 832 (0.43)

35/3 (0.4)

40/3 (0.37)

60/3 (0.30)

If you have some other thoughts/info, please complete the list.