The Pickett N-3-T is a metal slide rule with square and cube root scales in addition to the typical log scales. It’s a double sided slide rule with square root/K/A/D/DI/cube root scales on one side and LL0/LL1/DF/LL2/LL3 scales on the other side. The slider has B/ST/S/T/CI/C scales on one side and CF/CIF/Ln/L/CI/C scales on the other side. The initials of a previous owner are scratched into one of the metal brackets that hold the slide rule together.
Dimensions: 30.7 cm x 5.2 cm x 0.3 cm
