Type | ? Usually a generic name preceded by the form if not standard linear length - e.g. Pocket Enhanced Mannheim. For special models often supplemented by its function/use - e.g. meteorology. Sometimes a suffix is needed to distinguish between different versions - e.g. early or late. | Pocket Enhanced Mannheim |
---|---|---|
Sort | ? L/C/D/T/W/X where L=Linear, C=circular, D=Drum, T=tubular, W=watch, X=miscellaneous (i.e. the rest) | L |
Construction | ? Basic construction form of the body i.e. Closed/solid frame or Open frame or Duplex or Other | Closed/solid frame |
Material | ? Basic description: ivory/bone/wood/bakelite/plastic/metal/cardboard or combinations e.g. wood/veneered, wood/painted, etc | wood/celluloid veneers |
Length | ? Mostly length in cm or ” (inches) of the D scale but excluding any scale extensions. But for circular or watch slide rules it is the diameter & for tubular or drum slide rules it is the overall linear scale length. For other mechanical aids it is the physical length. | 12½cm |
Scales front | ? Standard (not maker’s) symbols for scales on front face e.g. A = X² (1-100) but § = generic symbol for any non-standard scale. Scales between solidi (/ /) are on the slide(s) whereas a vertical line ( | ) or reversed solidus ( \ ) + a symbol denotes scale(s) on a straight or bevelled side edge. | cm \ A / B,C / D |
Scales back | ? Standard (not maker’s) symbols for scales on back face e.g. S = sine (5° to 90° & 85° to 0°) or sin(x) but § = generic symbol for any non-standard scale. Scales between solidi (/ /) are on the back of the slide(s). | / S,L,T / |
Cursor type | ? Basic description (incl. material) + no. of hairlines, etc on any cursor(s) or alternative to a cursor - e.g. a stylus | metal/glass - 1 hairline |
Condition | ? Cn where n = 0-6 based on Herman van Herwijnen’s condition/quality scale | C3 |
Date | ? YYYY for year(s) of production or an approximation/range of years | 1925-1931 |
Extras | ? Basic description of any accessories - e.g. case or stand + where relevant, an accreditation for image, etc | black linen covered comb case blind stamped 11 + A-N |
Instructions | ? Details like “on back of rule” and/or language of instruction sheet/booklet - generic or instructions for common layouts usually not listed | |
Comments | ? Any special or noteworthy traits + significant use-related facts + pertinent details of scales/tables in well of stock + any significant tables, etc on the back of the stock | extremely narrow & Lilliput-like footprint with no model/maker markings on rule + 2 cursor windows in back |
In-Out | ? MM-YYYY / MM-YYYY of the date added/left the collection or <YYYY if exact MM-YYYY no longer known | <2005/ |
Model | Type |
---|---|
(NoName) | Enhanced Mannheim |
(NoName) | Enhanced Mannheim - early |
(NoName) | Enhanced Mannheim - export Pickworth |
(NoName) | Mannheim |
0121 | Pocket Darmstadt two-tone |
0123 | Pocket Rietz 360 |
0123 (Reitz S) | Pocket Rietz 360 two-tone |
0127 | Pocket International Conversion two-tone |
0129 Polymath | Pocket Log-Log |
0137 | Pocket Electro two-tone |
0203 Alpha | Demonstration Rietz two-tone |
0210 | Darmstadt |
0215 | Desktop Darmstadt 360° |
0218 | Darmstadt |
0232 | Rietz |
0235 | Desktop Rietz |
0238 | Rietz two-tone |
0239 | School Rietz two-tone |
0249 Elemath | School Log-Log two-tone |
0251 Alpha | School Rietz two-tone |
0252 Beta | School Technical two-tone |
0253 Gamma | School Technical two-tone |
0254 Delta | School Technical/Log-Log two-tone |
0260 | Machining |
0270 | Technical long-scale |
0291 Polymath-Duplex | Technical/Log-Log |
0292 Multimath-Duplex two-tone | Technical/Log-Log |
0320 | Crude Oil two-tone - System Dr. Schmeling |
0330 | Chemical two-tone |
0370 | Electro |
0408 | Finance two-tone |
0432 | Reinforced Concrete - System Dr. Schaeffer |
0440 | Reinforced Concrete two-tone - System Maarschalk |
10 | Enhanced Mannheim |
11 | Pocket Enhanced Mannheim |
11D | Pocket Darmstadt |
11E | Pocket Enhanced Mannheim |
11M | Pocket Enhanced Mannheim |
11O | Pocket Mannheim |
11R | Pocket Rietz |
11ZE | Pocket Electro |
11ZM | Pocket Enhanced Mannheim |
11ZR | Pocket Rietz |
12 | Pocket Enhanced Mannheim |
12a | Pocket Enhanced Mannheim |
12b | Pocket Enhanced Mannheim |
12c | Pocket Enhanced Mannheim |
17 | Extra long Enhanced Mannheim |
18 | Desktop Enhanced Mannheim |
20/1 Kiel | Rietz |
21 | Darmstadt |
21a | Desktop Darmstadt 360° |
22 | Extra long Pocket Rietz |
23 | Rietz |
23a (A/R) | Desktop Rietz - late |
23R | Rietz |
23R/3 | Rietz |
23R/3 | Rietz - early |
24 | Desktop Rietz |
24b | Extra long Desktop Rietz long-scale |
24R | Desktop Rietz - late |
24R/1 | Extra long Desktop Rietz long-scale |
26 | Business & Machining |
27 | Desktop Technical long-scale |
28 | Universal Toppography - 360g |
28a | Desktop Universal Topography - 400g |
3 | Mannheim |
31 | Timber |
33 | Chemical |
33 | Chemical - early |
37 | Electro |
37 | Electro - early |
37 | Electro - monochrome & early |
37/15 | Extra long Pocket Electro |
39 | Aviation Flight Computer |
39 | Pocket Electro - Sytem Besser |
4 | Enhanced Mannheim |
40 | Retail & Monetary |
40 | Retail & Monetary - classic |
40 | Retail & Monetary - early |
40a | Desktop Retail & Monetary - late |
41 | Lilliput Enhanced Mannheim |
42Z | Lilliput Mannheim |
43 | Reinforced Concrete - System Hoffmann |
45 | Desktop long-scale |
5 | Mannheim |
8 | Rietz |
9 | Rietz |
A.B.C | Military Tank Artillery |
ABC | Pocket Military Radiation |
ABL | Military Vehicle Logistics & Supply |
Glanzstoff | Pocket Textile |
Hoehenwindmessung | Desktop Military Artillery Range Finding/Meteorology |
Landis & Gyr | Pocket Mannheim |
RL 130 | Mannheim-like |
Sytem Rietz | Rietz |
Total Stralenschutz | Pocket Radiation |