require 'rubygems'
require 'spreadsheet'

book = Spreadsheet.open('Packungen.xls')
sheet= book.worksheet(0) 
size = []
sheet.column(11).each do |x|
  size << x
end
unit = []
sheet.column(12).each do |x|
  unit << x
end

size_string = []
size.each_with_index do |s,i|
  size_string << s.to_s + " " + unit[i].to_s
end
size_string.each do |s|
  puts s
end