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Posted (edited)

0.04" = 1" in 1/25 scale

Many people like to use 1mm = 1" for 1/25 scale which is very close (1mm = 0.98" in 1/25)

 

Common Bead sizes (beads listed by mm dia are obvious)

6/0 = 3.3mm, 8/0 = 2.5mm, 9/0 = 2.2mm, 10/0 = 2.0mm, 11/0 = 1.8mm, 13/0 = 1.5mm, 14/0 = 1.4mm, 15/0 = 1.3mm

 

Common American Wire Gauge sizes (size of the wire, does not include insulation)

8 = 0.1285" / 3.264mm, 10 = 0.1019" / 2.588mm, 12 = 0.0808" / 2.053mm, 14 = 0.0641" / 1.628mm, 16 = 0.0508" / 1.291mm, 18 = 0.0403" / 1.024mm, 20 = 0.0320" / 0.812mm, 22 = 0.253 / 0.644mm 24 = 0.0201" / 0.511mm, 28 = 0.0126" / 0.321mm, 30 = 0.01" / 0.255mm

 

 

Hard to give a specific answer without knowing the size hose you are replicating. Radiator hoses run anywhere from 1.5" -2" on cars up to 3" + on a large truck. Lots of smaller 3/4" to 1" hoses for expansion tanks and accessories (A/C, heater etc).

 

 

Edited by Aaronw

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