• 455 Martinson, Los Angeles
  • 8 (043) 567 - 89 - 30
  • support@email.com

Thornton A.G. / P.I.C. / British: PIC Pattern 1435

Thornton A.G. / P.I.C. / British PIC Pattern 1435

Details of: Thornton A.G. / P.I.C. / British - PIC Pattern 1435

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). Naval Time-Speed-Distance calculator
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 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 \ § / §,§ / § \ cm (reversed)
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   C3
Date? YYYY for year(s) of production or an approximation/range of years 1943
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 English briefly on back
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

Upward arrow preceding model no. on front face is UK government mark + all time related scales black & all speed/distance related scales red - identical front scale layout as Pattern 1448 sibling BUT missing Longitude (D.Long) scale on back of slide

In-Out? MM-YYYY / MM-YYYY of the date added/left the collection or <YYYY if exact MM-YYYY no longer known <2000/

All of:  Thornton A.G. / P.I.C. / British new search?

ModelType
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