Nice findJust tested it and it's very close with the results.I done a test on 0.25 Kanthal A1 with 8 turns on a 2mm bit (microcoil) and it came pretty close to what my resistance tells me.

Yeah its pretty close ..... I did 11 wraps of 28 AWG (.32mm) round a 2mm drill bit with A1 Kanthal last night Came out at 1.56 This says it would be 1.66 But my legs on the coil were going horizontal so it was not 11 full turns . . . Bloody close Best bit of Vaping software since EJuice Me Up I think