Bass String Lengths:
D'Addario
Short Scale = 32" Ball to Taper (or Silk)
Medium Scale = 34" Ball to Taper (or Silk)
Long Scale = 37.1" Ball to Taper (or Silk)
Super Long Scale = 38" Ball to Taper (or Silk)
DR Strings
Short Scale = 34" Ball to Taper (or Silk)
Long Scale = 38" Ball to Taper (or Silk)
Extra Long Scale - 40.7" Ball to Taper (or Silk)
Dunlop
Long Scale = 37.25" Ball to Taper
Elixir
Long Scale = 36.5" Ball to Taper
Extra Long Scale = 38" Ball to Taper
Ernie Ball
Long Scale = 37.25" Ball to Taper (or Silk)
Super Long Scale = 38.25" Ball to Taper
Fender Bass
Short Scale = 32" Ball to Taper
Medium Scale = 34" Ball to Taper
Long Scale = 36.5" Ball to Taper
Fodera
Long Scale = 37.5" Ball to Taper
Extra Long Scale = 39.25" Ball to Taper
GHS
Short Scale: 32" Ball to Taper (or Silk)
Medium Scale: 34" Ball to Taper (or Silk)
Long Scale: 36.5" Ball to Taper (or Silk)
Long Plus: 38" Ball to Taper (or Silk)
Ken Smith
Long Scale = 38" Ball to Silk
Extra Long Scale = 40" Ball to Silk
For some B strings there is a "Medium Scale" option = 36.5" Ball to Silk
La Bella
Short Scale = 32" Ball to Silk
Medium Scale = 34" Ball to Silk
Long Scale = 37" Ball to Silk
Extra Long Scale = 38" Ball to Silk
Hofner Beatle Bass = 34" Ball to Silk
Rotosound
Short Scale = 32" Ball to Silk
Medium Scale = 34" Ball to Silk
Long Scale = 37" Ball to Silk (or Taper)
Extra Long Scale = 39" Ball to Silk
SIT
Long Scale = 37.25" Ball to Taper
Extra Long Scale = 38" Ball to Taper
Thomastik-Infeld
Short Scale = 35.5" Ball to Silk
Long Scale = 37" Ball to Silk
Super Long Scale = 39.75" Ball to Silk