Professor Herning

System Wern ABC Slide Rule 2/3 -- Additional Calculations

System Wern ABC Slide Rule 1/3 -- Overview

Paper Student's t-distribution Calculator

Circular Slide Rules: Faber Castell 8/10 + Sama & Etani Model 90

Hemmi 153 Electrical Engineer's Slide Rule with Gudermannian Scale (3/3: Hyperbolics)

Hemmi 153 Electrical Engineer's Slide Rule with Gudermannian Scale (2/3: Trigonometry)

Hemmi 153 Electrical Engineer's Slide Rule with Gudermannian Scale (1/3: Overview)

The lament of the basic slide rule OR the sorrow of the 4-function calculator

EZ Grader Long Ranger Grading Slide Rule (New!)

Logarithms on Early Calculators -- BONUS: Non-Series Derivation of the Error

Logarithms on Early Calculators 3/3: Implementation

Logarithms on Early Calculators 2/3: Error Analysis

Logarithms on Early Calculators 1/3

Differential Trig Scales & the AA 010 / P221 Slide Rule (Thornton/PIC)

Hemmi 260 Layout 2/2: Runners-Up Club

Hemmi 260 Layout 1/2

Flying Fish 1003 vs Pickett N4 slide rule

TI-30: the calculator that killed the slide rule

Frankenrule: the Hemmi 258ab slide rule

Slide Rule vs Calculator Showdown: Decilon & HP-35

A Tour of the Pickett Slide Rule Universe

Worst Scale Layout on a Slide Rule? Meet the early Faber Castell 2/82

W Scales -- Faber Castell 2/83 Style

Pickett N4 and its Base-10 LL Scales

Dietzgen Microglide Slide Rules and the "Dietzgen Scale Set"

Soviet Slide Rules (GOST 5161)

K+E 4110 Power Trig Slide Rule -- help needed!

Another Form and Variations: Algebraic Expressions using Trig. Part 2/2 (+SR addition)

Distance on the Slide Rule: Algebraic Expressions using Trig. Part 1/2

Machine Shop Calculations 2/2