IDL letter scale

This little letter scale was made by IDL Mfg. & Sales Corp., Carlstadt, N.J., USA. It is numbered 32200 and the scale has a capacity of 1 Lbs. The chart is subdivided per half ounce. The rates sticker has the date April 1988. The rate of 25c per 1 oz. was valid in the period April 3 1988 till February 3 1991. Below some more pictures of this letter scale.