1 : 50 000 Topo Tool

Print this tool onto an A4 transparent acetate sheet and cut out. Do not select the 'Fit to printer margins' option while printing, this will make the scale ruler inaccurate. Laser printers can print straight onto acetate while Inkjet printers can't.

  1. 1 : 50 000 Scale ruler
  2. MM' map grid and decimal minute to second conversion table 
  3. GPS format conversion chart formulas
    HDDº MM' SS"   =>   HDDº MM.MMM'
    HDDº MM.MMM'   =>   HDD.DDDº
    HDDº MM.MMM'   =>   HDDº MM' SS"