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- 8 (043) 567 - 89 - 30
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Type | ? A generic name (e.g. Rietz) or function/use for specialist models (e.g. Meteorology) for grouping similar models across makers. If not “standard” 25cm linear length, preceded by the form (i.e. Demonstration, Desktop, Pocket, Waistcoat, Keyring, Lilliput or Book) + if needed, qualification to distinguish between versions (e.g. early or late). | Poly-slide (2) Steel Weight Calculator |
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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 veneer |

Length | ? Mostly the linear length of the D scale (in cm or inches) excluding any extensions. For circular/watch slide rules it is the diameter but for helical/tubular/drum slide rules it is the overall scale length. For other calculating aids it is the physical length. | 10" |

Scales front | ? Standard (not maker’s) symbols for scales on front face e.g. A = X² (1-100) but § = generic symbol (signum sectiōnis) for any non-standard scale + scales between solidi / / are on the slide(s) whereas scales after vertical line | or after reversed solidus \ are on a straight or bevelled top or bottom side edge | Inch \ A / B,B / BI,BI / | Inch |

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 (signum sectiōnis) for any non-standard scale + scales between solidi / / are on the back of slide(s) but scales listed after / / - notation are on another surface e.g. back of stock or inside a lid | |

Cursor type | ? Basic description (incl. material) + no. of hairlines, etc on any cursor(s) or alternative to a cursor - e.g. a stylus | none - not needed |

Condition | ? Cn where n = 0-6 condition/quality scale where 0 = brand new in box & 6 = broken | C2 |

Date | ? YYYY for year(s) of production or an approximation/range of years | 1930s |

Extras | ? Basic description of any accessories - e.g. case or stand + where relevant, an accreditation for image, etc | |

Instructions | ? Details like “on back of rule” and/or language of instruction sheet/booklet - generic or instructions for common layouts usually not listed | some gauge marks explained on front face |

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 | Possibly made by D&P (Pi symbol) for naval steel shipbuilding where all weights in construction are recorded to calculate final displacement. |

In-Out | ? MM-YYYY / MM-YYYY of the date added/left the collection or <YYYY if exact MM-YYYY no longer known | <2010/ |

Model | Type |
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A.G. D6957 | Improved Perry Log-Log |

A.G. Clementson | Water Pipe Sizing |

A.G. English Electric | Lilliput A.C. Power Factor Electro |

A.G. (NoName) | Desktop "prototype" |

A.G. (NoName) | Poly-slide (2) Steel Weight Calculator |

British 0552/1448 | Naval Time-Speed-Distance calculator |

British AD 050 | School Differential Log-Log |

British AD 060 | Standard |

British AD 070 | Rietz |

British AD 150 | Log-Log |

British P221 | Differential Comprehensive Log-Log |

British P271 | School Differential Log-Log |

British P281 | School Standard |

PIC (NoName) | Pocket Mannheim |

PIC 111/PC 8 | Differential Rietz |

PIC 112 | Desktop Differential Rietz |

PIC 120 | Pocket Differential Log-Log |

PIC 121/PC 18 | Differential Log-Log |

PIC 122 | Desktop Differential Log-Log |

PIC 131 | Differential Electro |

PIC 131/PC 18 | Differential Electro |

PIC 132 | Desktop Differential Electro |

PIC 141 (Model E) | A.C. Electrical Electro |

PIC 144 (Model F) | A.C. Electrical Electro |

PIC 221 | Differential Comprehensive Log-Log |

PIC 241 | Differential Log-Log |

PIC 271 | School Differential Log-Log |

PIC F 3649 | Log-Log |

PIC F 3651 | Desktop Electrical & Mechanical Engineer Electro |

PIC F 3654 | Mannheim |

PIC F 3658 | School Mannheim |

PIC F 3756 | Desktop Mannheim |

PIC F 4865 | Engineer Commerce Electro |

PIC Junior | School Mannheim |

PIC P251 | Standard |

PIC Pattern 1435 | Naval Time-Speed-Distance calculator |

PIC Pattern 1448 | Naval Time-Speed-Distance calculator |

PIC Rule Slide | Military Gunnery Royal Artillery |

PIC Standard | Mannheim |

PIC Standard Rule Slide | Mannheim Royal Artillery |

PIC VF 0123 | Mannheim Military |

PIC VP114/PC 1 | Pocket Differential Rietz |