dilley
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| posted on 30/8/06 at 09:54 PM |
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numpty measurements
ok dont laugh but how many thou to a mm.
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StevenB
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| posted on 30/8/06 at 09:57 PM |
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if memory serves its 39.37
1000 / 25.4
s
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Humbug
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| posted on 30/8/06 at 09:58 PM |
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1 inch = 1000 thou
1 inch = 25.4 mm
so there are 1000/25.4 = 39.37 thou to 1 mm
(I think?)
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jon_boy
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| posted on 30/8/06 at 09:58 PM |
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Given roughly 25mm to one inch 1000/25 is 40 thou to one mm. which is rough and could be wrong. Jon
Beaten to it
[Edited on 30/8/06 by jon_boy]
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ian furness
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| posted on 30/8/06 at 09:59 PM |
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1 DIVIDED BY 25.4=0.0393
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dilley
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| posted on 30/8/06 at 10:03 PM |
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got adrill bit with 37 stamped on it is this 37 thou?? I need to increase it but I only have a 3mm bit which not being an engineer doesnt seem much
bigger.
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Chippy
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| posted on 30/8/06 at 10:21 PM |
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Well IF your drill is 37 thou, and I would guess that it is, it is just about 1mm, so your 3mm drill is three times as thick. Ray
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flange nut
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| posted on 30/8/06 at 10:32 PM |
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It's probably a number 37 drill which is .104 of an inch in diameter.
Thats 104/39.4 = 2.64mm
Geoff
[Edited on 30/8/06 by flange nut]
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MikeRJ
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| posted on 30/8/06 at 10:45 PM |
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quote:
Originally posted by flange nut
It's probably a number 37 drill which is .104 of an inch in diameter.
Geoff
Which is 2.64mm, so it would look quite simmilar to a 3mm bit.
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dilley
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| posted on 31/8/06 at 07:41 AM |
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I assume that it is a 16 thou increasement??
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MikeRJ
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| posted on 31/8/06 at 02:49 PM |
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It's actualy 14.11 thou difference.
3mm * 39.37 = 118.11
118.11 - 104 = 14.11
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