Details and Image
Area of Use
Circular and Spiral Slide Rules
CONCISE / HP 600-CE
Concise International Co.
Ø 7.5 cm
Chemical & Mechanical Engineering
Version retailed by Sama & Etani as a promotional give away for Hewlett Packard. In addition to the periodic table on the back it has an extra pull-out plastic card for numerous conversions factors and chemical related data tables.