- A Fowler's Gallimaufry (2nd edition, Version 2)
The fullest catalogue of Scientific Publishing Co. and Fowler pocket-watch calculators: the Mechanical Engineer and early SPC types; Fowler's patents (5,528/1910, 20,416/1913, 3,638/1914, 15,990/1914, 215,648/1924); design changes (sintered cast cases, two-part pressed-steel knurled cases, late smooth 'chromed' sintered cases c.1948); every type with photographs — Fowler's Calculator, Types A, A1, B Textile, E, E1, H, M, O, R, RX, T, short- and long-scale Textile, Magnum Textile, Vest Pocket MD/H/CSR, Universal, Universal Blitz-Rechner, Twelve-Ten, Magnum Long Scale, Jubilee Magnum, Nautical, Artillery, Long Scale, Circular Slide Rule, Junior, Kearns, Mackay, Ribble; Bakelite backs; a feature-by-feature dating table (loops, winders, address banners, FC logo); cases and tins; workshop photographs; chronology; serial-number appendix; documents appendix.
- A Mannheim Type Slide Rule (with A, B, C, D, CI, K, S, T, L scales) — Frederick Post Co. instruction leaflet
Early Post leaflet for its Hemmi-made Mannheim rules (ISRM files it under the early model 1447, the sibling of the Hemmi 30/32 pocket rules). Describes the parts, locating numbers, and the operations; recommends freeing a tight slide with paraffin oil, paraffin wax or sandpaper. Undated (pre-Teledyne). 6 pp.
- Albert Nestler A.-G., Lahr (Baden) — Rechenschieber catalogue
Pre-war Nestler trade catalogue. Lists the Original-System Rietz No. 23/1 and 23/3 and, flagged 'Neu!', the Original-Modell Rietz with reciprocal and extended scales No. 22R/3, 23R/1, 23R/3, 23aR/1, 24R/3, 24R/1 — mahogany with white celluloid scales — and explains the D.R.P. 410565 steel-spring stock that made adjusting screws unnecessary.
- Anleitung — Castell Präzisions-Rechenstäbe Novo-Duplex Nr. 2/83, 62/83
Scanned original German instruction booklet for the Novo-Duplex 2/83 and 62/83 — the immediate predecessor of the 2/83N (no A, B, DI, LL00 or back-face CI/D/LL0). The method text is substantially the one carried over into the 2/83N manual, including the Geroplast care note (Vaseline or silicone oil for the slide; Castell No. 211/212 cleaners; no strong solvents, which attack the colour of the graduations).
- Chronology of Pickett Slide Rule Development
One-page illustrated chart dating Pickett rules c.1945-1975 by alloy, slide/rail interface, slide tension springs, end-brace (stator post) style, cursor bars, lenses and logo style (Styles 0-6). Used to date the N-515-T and any Pickett.
- Der logarithmische Rechenschieber und sein Gebrauch
Instruction booklet written by Prof. Ernst Hammer of the Stuttgart Technische Hochschule for Albert Nestler's rules (the preface says Nestler wanted a proper manual to accompany the instruments it supplied to Stuttgart students). Pre-dates the Rietz layout; the ancestor of Nestler's later manual of the same title.
- Der logarithmische Rechenschieber und sein Gebrauch (3rd, enlarged edition)
Nestler's own general instruction book for its rules. § 23–25 describe the System Rietz No. 23 (scales O1/O2 = A/B, U1/U2 = D/C, C = cube scale K, R = reciprocal, L, slide reverse S, S & t, T; the 1:25 map scale and millimetre scales); §§ 92–93 give the Rietz sine and small-angle procedures, including reading sines through the cut-out in the back of the stock. No model-specific 23 R leaflet was found online; this is the closest Nestler-authored manual.
- Electronics and Your Slide Rule, Part I — Step-by-step to Skillful Operation (CIE Electronics Slide Rule No. 515 / Pickett N-515-T)
CIE Auto-Programmed lesson for the Pickett-made CIE electronics slide rule (N-515-T). Fourth Edition, Fifth Revised Printing, October 1966 (copyright 1958, 1962, 1965, 1966). Topics 1-14: holding the rule, the scales, reading graduations, decimal point, multiplication and division. Title page states 'Electronics Slide Rule No. 515, designed by Cleveland Institute of Electronics, U.S. Patent Number 3,120,342'. 34 pp.
- Electronics and Your Slide Rule, Part II — Combined Operations with Electronic Applications (CIE Electronics Slide Rule No. 515 / Pickett N-515-T)
CIE Auto-Programmed lesson for the Pickett-made CIE electronics slide rule (N-515-T). Fourth Edition, Fifth Revised Printing, October 1966 (copyright 1958, 1962, 1965, 1966). Topics 15-24 (lesson 3123-1): CI scale and reciprocals, combined multiplication/division, resetting the slide, repeated operations, A and B scales, squares and square roots, proportion. 43 pp.
- Electronics and Your Slide Rule, Part III — Combined Operations with Electronic Applications (CIE Electronics Slide Rule No. 515 / Pickett N-515-T)
CIE Auto-Programmed lesson for the Pickett-made CIE electronics slide rule (N-515-T). Fourth Edition, Fifth Revised Printing, October 1966 (copyright 1958, 1962, 1965, 1966). Topics 25-36 (lesson 3124-1): the Reactance and Resonance Decimal Point Locator, resonance and reactance problems, the 2pi scale, the H scale, S and T trigonometric scales. Worked Examples 31-43. The key manual for the rule's special scales. 43 pp.
- Electronics and Your Slide Rule, Part IV — Combined Operations with Electronic Applications (CIE Electronics Slide Rule No. 515 / Pickett N-515-T)
CIE Auto-Programmed lesson for the Pickett-made CIE electronics slide rule (N-515-T). Fourth Edition, Fifth Revised Printing, October 1966 (copyright 1958, 1962, 1965, 1966). Topics 37-44 (lesson 3125-1): solving right triangles, circuit problems by triangle rules, the L and Ln scales; summary and appendix. 52 pp.
- Elementary Instructions for Operating the Slide Rule, Mannheim Type (K&E, copyright 1928) — pages 1–6 only
The instruction sheet supplied with K&E's beginner's rules, including the 4058C (Jeff owns an original copy with his 4058C). This file is only the six-page identification preview published by Clark McCoy: reading three-figure numbers on C and D, locating numbers with the glass indicator, multiplication (2 x 3, 18 x 26, 72 x 51) and the decimal point. A full scan of Jeff's own copy would replace it.
- Fowler's "Universal" Calculator — Instructions, with Supplementary Chapters on Logarithmic Calculation and Circular Calculators
The pocket booklet supplied with the 3⅜-in single-dial Universal Calculator (scanned complete, 32 spreads): description of the nine circles (short scale, reciprocals, logarithms, cubes and cube roots on three circles, sines, small-angle sines, tangents), the datum-and-cursor method for multiplication, division, proportion, powers, roots and trigonometry, numerous worked examples, and supplementary historical chapters on logarithms (Napier) and circular calculators. The Hampson Street, Sale imprint under the name Fowler & Co. dates this printing to between the 1938 move to Hampson Street and the wartime change of name to Fowler's (Calculators) Ltd.
- How to Use Dual Base Log Log Slide Rules (Pickett Form M-15)
Pickett's dual-base log-log manual, c.1960 printing of the 1947 text (yellow-logo cover, Chicago and Santa Barbara). Covers the split square-root and cube-root scales, the CF/M and DF/M scales, double T scales, vector methods, the dual-base (+/-) log-log scales, and hyperbolic and circular functions of complex arguments. The manual for the N3's square-root, cube-root and two-T-scale layout. ISRM notes this copy came with an N16-ES.
- How to Use Log Log Slide Rules (Pickett Form M-14; reference for Models 800, 803, 300, 600 and N3, with the 803 supplement)
Pickett's standard log-log manual (copyright 1953): reading the scales, multiplication and division, decimal point, CI/CF/DF, A-B squares and roots, K cubes, L logarithms, S, T and ST trigonometry, elementary vectors, and the log-log scales (powers, roots, e^x, logs to any base), with practice problems and answers. The ISRM scan names the N3 and Model 600 among the rules it served. 74 pp (37 sheets).
- How to Use Trig Slide Rules
The student instruction manual for the Pickett trig rules — illustrated with the Model 1010 Trig and Model 902 Simplex Trig, the two student rules most often reproduced as demonstrators. Part 1 slide-rule operation (reading the scales, multiplication, decimal point, division, continued products, proportion); Part 2 special scales (CI, DI, CF, DF, CIF, A/B, K, L, S, T, ST, combined operations); Part 3 trigonometry applications (law of sines, vectors, solving triangles); Part 4 the principles (logarithmic scales explained). Every procedure transfers directly to the matching 4-ft or 7-ft wall rule.
- Instructions — Precision Slide Rule No. 2/83N, 62/83N with enlarged scale range
English text of Faber-Castell's owner's instructions for the 2/83N Novo-Duplex and its pocket twin the 62/83N: the full 31-scale list with formulas, reading the 25 cm and 50 cm (W) scales, C/D, CI/DI, A/B, K, folded and Pythagorean P scales, trig S/T1/T2/ST, complex numbers, the W root scales and their black/red index rules, the L mantissa scale, the eight LL scales, cursor marks (d/q circle area, kW/PS, 3.6) and care of the rule. Retyped transcription (not a page scan) with the original diagrams omitted.
- Instructions for the Use of Fowler's Vest Pocket Calculator (Long Scale) — List 33V
The four-page folded leaflet for the 2½-in double-sided Long Scale vest-pocket calculator. Describes the front dial (outer 'short scale' 6.7 in in circumference plus a six-circle 'long scale' 30 in long) and the seven back-dial scales (multiplying scale, reciprocals, logarithms, square roots twice round, log sines 5°45'–90°, log tangents 5°45'–45°, small-angle log sines 35'–5°45') with their graduation intervals; the 'Datum' line, 'Cursor', top nut X and side nut Y; multiplication, chained factors, division and a/b÷m by the set-datum / set-cursor-to-1·0 / turn-dial method; gauge points; mensuration and trigonometry examples. Converted to PDF from the museum's single high-resolution scan of the two open spreads (2 PDF pages).
- Instructions for the Use of the Fuller Calculator (Models No. 1, No. 2 and Fuller-Bakewell)
Stanley's instruction booklet for Professor Fuller's calculators with a 41 ft 8 in (500 in) logarithmic scale: description of cylinder, inner cylinder and handle, the fixed index F and movable indexes A and B, adjusting the index bar (pivot screw, tightening screw, cam), the multiply/divide 'bring' and 'set' sequence with worked examples, decimal-point rules by characteristic, Model No. 2 logarithm and sine scales, the Fuller-Bakewell tacheometry scales with a field-book example, and tables of data. Includes the box-as-stand illustration.
- Log Log Duplex Decitrig Slide Rule No. 4081: A Manual (1955 printing)
The owner's manual supplied with the K&E 4081 Log Log Duplex Decitrig (and the 4181-3 and 4181-1) made after 1955, the scale set of Jeff's 4081-3 s/n 640904. Copyright 1943, 1945, 1947, 1955. Six chapters: multiplication and division (incl. DF/CF folded scales); proportion and combined operations (CI, CIF); squares, cubes and roots; trigonometry with the S, T and SRT scales and solution of triangles; the log-log scales (LL0x/LLx, powers, roots, e^x, logarithms to any base); and logarithmic theory, with exercises and answers. 132 pp., image scan without text layer.
- Nestler Slide Rules (English export catalogue)
Sixtieth-anniversary English catalogue with the advisory table of the four-digit model range: by then the 25 cm engineers' Rietz was No. 0232 (wood) and No. 0238 (Anagit plastic), with plastic school Rietz No. 0239. Useful for placing a 23 R before the renumbering.
- Otis King's Patent Calculator — instructions (Models K and L)
The 8-page folded instruction leaflet supplied with the Otis King: outline drawing of holder, cylinder and cursor with top (T) and bottom (B) arrows; scale details for Models K and L (66-in holder scale; K cylinder with two decades meeting at the 'ONE' middle unity; L cylinder with a log number scale plus a 0–1 linear mantissa scale); the three-movement method; multiplication, division, proportion, percentage, constant-factor and sterling examples; closing in / opening out the Model L cylinder; logs, powers and roots on Model L; decimal-point rules. Same Dundonald Road edition as the sheet in my box with serial T3271.
- Otis-King — Conclusions?
Follow-up survey of Otis King serial numbers from members' examples: serial-letter series and estimated production, Types A–E (including the early Type D and the walking-cane Type E), and Otis Carter Formby King's patents and addresses (Coventry, then 51 Holborn Viaduct).
- Pickett Teaching Guide for Slide Rule Instruction (Manual 601)
Pickett's teacher's guide for junior- and senior-high classes, in twelve sections: introducing the rule, basic principles (adding lengths with two foot-rules), multiplication and division, approximation, scientific notation, the 'powers-of-ten' rule, A and B, K, CI, logarithms and how the L, C and D scales are made, S/T/ST, and operation in terms of logarithms. Repeatedly directs the teacher to set problems on the 'large demonstrator rule' for the class to read (2 × 3 = 6 on the opening page). The back pages of this printing carry Pickett's catalogue, including the 'Wall Rules' entry: Eye-Saver Yellow, specially treated plywood, adjustable metal end plates, hard-faced plastic cursor, plastic slider inserts, hung from wall, ceiling or blackboard, duplicating both sides of the N3, N4, N500, N902 and N1010 in 4-ft (…WR-4) and 7-ft (…WR-7) lengths; also the PR12/PR13 overhead-projection rules.
- Post Slide Rule Instructions — models 1441, 1444, 1447, 1452 (Teledyne Post)
Later (Teledyne era, c.1970s) instruction booklet for Post's Hemmi-made rules including the 1441 four-inch pocket rule, the sibling of the Hemmi 32 that the U.S. Blue Co. pocket rule is. Includes a parts list (indicator glass, complete indicator, snap-on magnifier) useful when sourcing a replacement cursor. 20 pp.
- Rechenschieber von Faber-Castell (8th edition)
Bilingual (German/English) collector's catalogue of every known A. W. Faber / Faber-Castell slide rule, with production ranges (2/83 Novo-Duplex 1962–1972; 2/83N 1969–1975), materials (Geroplast polystyrene 1952–1977), and the key to blind date stamps (1958–1977: MYY or MMYY, usually on an end edge of the stock on duplex rules).
- Regla de cálculo de precisión Novo-Biplex No. 2/83N, 62/83N — instrucciones
Spanish-language version of the 2/83N/62/83N instructions, from the export issue sold as 'Novo-Biplex'. Same content as the English manual.
- The Fascinating Tale of the Fowler Magnum Pocket Slide Rule
Short history of Fowler and a scale-by-scale description of the 4⅝-in Magnum Long Scale: ring-by-ring radius and circumference table (six-ring long C totalling 49.5 in; outer short scale 13.4 in), the two Magnum layouts (L scale outside or inside the long scale), gauge marks, and the two-knob operation (top crown over the red datum line turns the dial; the 2 o'clock knob turns the black cursor).
- The Fowler Calculators — a Catalogue Raisonné
The first systematic catalogue of 50 Fowler models and scale varieties, with the C-R numbering collectors still quote (2A…2F early 2½-in groups, 2M/3M/4M modern groups by diameter, G general / T textile / A artillery / N nautical / MT machine time / MP Mackay suffixes). Lists every model's circles front and back, the case construction by group, and the page count of each model's instruction booklet.
- The Mannheim Slide Rule (N4041): A Self-Teaching Manual with Tables of Settings, Equivalents and Gauge Points
K&E's full manual for its Mannheim rules with the 4041 scale set (A, B, C, D; S, L, T on the back of the slide) — the same scale set as the 4058C Beginner's rule. Covers reading, multiplication, division, proportion, squares and roots, the trig and log scales, and tables of settings and equivalents. 78 pp.
- The Polyphase Duplex Decitrig Slide Rule No. 4071: A Manual (1939 edition, with the later Manual No. 68 2055 edition covers)
The owner's manual for the K&E 4071-3 Polyphase Duplex Decitrig (sold 1939-1967), the model of Jeff's 4071-3 (s/n appears to be 640890, c. 1952). Includes the orange 1939 paper cover and the later green 'Slide Rule Manual' cover (No. 68 2055). Five chapters: multiplication and division (DF/CF folded scales); proportion and combined operations (CI, CIF); squares, cubes, roots and the L scale; plane trigonometry with the S, ST (Sine Tangent) and T scales, red numbers, law of sines and cosines, radians and vectors; logarithms and the slide rule, with a historical note and answers. 104 pp., image scan without text layer.
- The Quick and Easy "Lawrence" Slide Rule Instruction Book (Simple Rules for Using the Slide Rule)
Lawrence's own instruction book for its A B CI C D K rules: the 'mental survey' and 'digit and integral digit' methods of placing the decimal point, multiplication, division, squares, cubes and their roots. 16 pp.
- The SRT Scale: Supplement to the Manuals on the 4081 Log Log Duplex Decitrig, 4083 Log Log Duplex Vector and 4071 Polyphase Duplex Decitrig Slide Rules
Six-page K&E supplement issued when the SRT scale replaced the ST scale (catalogue 1955b; on the rules c. 1956). Tells owners to read SRT wherever their manual says ST; revised Section 38 'Radians. Small Angles' (replaces 4081 manual sections 37-38 and 4071 manual sections 39-40): SRT is a C scale graduated 0.573-5.73 degrees so that an angle in degrees on SRT reads in radians on C; worked examples (3.56 deg = 0.0621 rad), exercises and answers.
- The Unique Lawrence (version 9)
History and model catalogue of Lawrence Engineering Service (Wabash 1935–38, Peru from 1938) and Engineering Instruments Inc.: the family history, the standard 12-inch blanks and fixed stock dimensions, the decoding of model numbers (8-B = 8-inch stock, type B Enhanced Mannheim A/B, CI, C/D, K), PAT. PEND. markings, OEM and themed rules, with picture galleries. Originally in the Proceedings of IM2011 (Oughtred Society); updated 2017.
- US Patent 3,120,342 — Slide Rule (reactance and resonance decimal point locator)
Filed 16 Oct 1958 (Ser. No. 767,699), granted 4 Feb 1964, 16 claims. Covers the coarse decade-stepped scales with unit-labelled number rows and indicator arrows used on the back of the CIE/Pickett N-515-T to locate the decimal point in reactance and resonance problems. Two drawing sheets with worked settings (Figs. 3-5).
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