Vintage 1959 Pickett N4-T Slide Rule Vector-Type Log Log Aluminum w/ Leather Case

A beautifully preserved, highly sophisticated Pickett Model N4-T Vector-Type LOG LOG Dual-Base Speed Rule. Manufactured in Chicago and sporting a 1959 copyright date, this is not your run-of-the-mill slide rule. The N4-T is a legendary, premium analog computing masterpiece prized by engineers, physicists, and military technicians of the mid-century era for its ability to handle complex vector mechanics and dual-base log-log calculations. Constructed with Pickett’s famous solid aluminum alloy core, this rule features a smooth cream finish that remains bright and highly legible. Whether you are a dedicated collector of vintage science and technology, a math enthusiast, or looking for a stunning mid-century display piece, this complete set is a fantastic find. Pickett N4-T (Vector-Type LOG LOG Dual-Base Speed Rule) Copyright 1959 Chicago, USA Material: Premium Aluminum Core Alloy (sturdy, warp-resistant construction) Scale Configuration: Dual-sided advanced engineering scales including LL1, LL2, LL3, LL4, DF/M, CF/M, TH, SH, Ln, L, CI, C, and D. Includes specialized decimal tracking indicators ("DIGITS 1-4-7-10" and "ODD/EVEN DIGIT NOS."). Cursor: Original clear runner with fine, crisp red vertical hairline indicator intact. Casing: Includes the original, heavy-duty saddle-brown protective leather sheath with the debossed Pickett triangular logo on the flap. Condition Report Slide Rule: Excellent vintage condition. The aluminum body is perfectly straight, and the slider glides smoothly across the frame. The scale markings and numbers are remarkably clean, crisp, and bright with minimal wear. Cursor: Clear plastic is intact with excellent visibility; minor age-related micro-scratches that do not impact readability. Hairline is perfectly solid. Leather Case: Great structural condition with strong stitching. Shows a beautiful, authentic vintage patina and light surface scuffing consistent with age, giving it a fantastic historic look. Original Pickett Model N4-T Slide Rule Original Pickett Debossed Leather Protective Sheath #VintageSlideRule #PickettN4T #VectorSlideRule #LogLogSpeedRule #1959PickettChicago #AluminumSlideRule #VintageEngineeringTool #MathematicalCollectibles #MidCenturyScience #AnalogCalculator