Pickett N4-T Dual Base Log Log Vector Hyperbolic + Leather Case + 29 Scales

Description

Pickett N4-T Dual Base Log Log Vector Hyperbolic Slide Rule
Leather Case
29 Scales:
Front Scale :
3
√
#1,
3
√
#2,
3
√
#3, DF [ CF, CIF, T1, T2, ST, S Cos,  CI, C ] D, DI
, √
#1,
√
#2
Back Scale : LL1+.00D/-.00D, LL2+.0D/-.0D, DF/m [ CF/m, TH, SH, Ln, L, CI, C ] D, LL3+.D/-.D, LL4+D./-D.
Fine Condition.  Scuffed one portion of Ln scale surface (see pics). Clean leather case with no writing.
YES, at your request, I will combine shipping.
Shipping is for each additional item.