What is the Correct A/C Vacuum Hose Size ('65)

According to my metric dial calipers, the nipple on the new replacement A/C control switch is 3.35mm or 0.131889".

I found a "blue" hose 3.5mm = 0.1375" (9/64" = 0.140") hose on ebay I wonder if that's it? But then again, 1/8" would be a tighter fit.

4mm hose = 0.157"
5/32 hose = 0.15625"
**1/8 hose = 0.125" (red on Ebay)
3mm hose = 0.1181"
(3mm and 1/8" are advertised as the same hose)