Jean_LAMESCH_Sliderules_Collection_NBX_JL

1688_GE_RADIATION_CALCULATOR_15C

1688_GE_RADIATION_CALCULATOR_15C

This black-body plastic slide rule GE-15C belongs to BOX_JL06, and is given here as an example of a much cheaper device following the very expensive THORNTON 5100, of which very few examples were built.