gistfile1.rb

require "rubygems"
require "prawn"
require "prawn/measurement_extensions"

Prawn::Document.generate("badge_printing.pdf", :margin_top => 0.5.in) do     

  # our start_x position for the columns
  [0.5, 4].each do |column_width|

    # spacing between each "badge"
    move_down 0.5.in
    5.times do
      bounding_box [column_width.in, cursor], :width => 3.0.in, :height => 1.5.in do
        # do what you want within this box
        move_down bounds.height/2
        font_size 16
        text "John Smith", :align => :center

        font_size 12
        text "job title", :align => :center
        text "\"personal quote\"", :align => :center
        stroke_bounds
      end
      stroke_bounds
      # spacing between the badges
      move_down 0.3.in
    end
    # next column, back to the top
    move_up bounds.top - cursor
  end
end

`open badge_printing.pdf`