Salter letter scale
This Salter No. 18 is a modern version of the previously presented Salter No. 18. It's nice to see there is no spring adjusting screw. By shifting the chart one is able to set this scale to zero. The weighing capacity is 8 ounces. The postal rates for Inland, Common Wealth and Foreign countries are also on this chart. These rates were valid in the period October 1 1957 - May 17 1965. Below some more pictures of this letter scale.
back of the scale
