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Graphoplex:ROPLEX

Graphoplex ROPLEX Rietz

Details of: Graphoplex - ROPLEX

Type? Where possible the generic name preceded by the form if not 25cm/10” linear - e.g. Pocket Enhanced Mannheim. For specialty types, often supplemented by its use. Sometimes a suffix is also added to distinguish between versions of the same model. Rietz
Sort? L/C/D/T/W/X where L=Linear, C=circular, D=Drum, T=tubular, W=watch, X=miscellaneous (i.e. the rest) C
Construction? Basic construction form of the body i.e. Closed/solid frame or Open frame or Duplex or Other Duplex
Material? Basic description: ivory/bone/wood/bakelite/plastic/metal/cardboard or combinations e.g. wood/veneered, wood/painted, etc metal/plastic
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. Ø 12m
Scales front? Mostly standardised (not maker’s) symbols for scales on front of stock 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 edge. C / D,A / B,BI
Scales back? Mostly standardised (not maker’s) symbols for scales on back of stock 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). K,S,L,T,ST
Cursor type? Basic description (incl. material) + no. of hairlines, etc on any cursor(s) or alternative to a cursor - e.g. a stylus duplex metal wheel - 1 hairline
Condition? Cn where n = 0-6 based on Herman van Herwijnen’s condition/quality scale C2
Date? YYYY for year(s) of production or an approximation/range 1950s
Extras? Basic description of any accessories - e.g. case or stand + where relevant, an accreditation for image, etc original Graphoplex maroon linen covered stiff cardboard case - image courtesy of PHOTOCALCUL
Instructions? Details like “on back of rule” and/or language of instruction sheet/booklet - generic or instructions for common layouts usually not listed French
Booklet (PDF)? Downloadable .PDF copy of unusual or uncommon model specific instructions download
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

Designed for rapid & accurate calculating - circular but housed in square case - front & back shown as per instructions - slide also worked by metal wheel - table of gauge points in centre​

In-Out? MM-YYYY / MM-YYYY of the date added/left the collection or <YYYY if exact MM-YYYY no longer known 03-2008/

All of:  Graphoplex new search?

ModelType
(NoName) 615 Pocket Rietz - early
(NoName) 620 Rietz - early
16oo School Riez C.A.P. - early & all black
604 Typography Cicero printing
612 Pocket Rietz
620 (ver. 5) Rietz
620 d (ver. 1) Rietz
630 Geometre Surveying Topography - 400 g early
640 Electro Log-Log
643 Pocket Electro Log-Log
650 Pocket Electro
1600 School Rietz C.A.P.
1600 School Rietz C.A.P. - blue bands
1612 Pocket Rietz - early & all black
1614 Demonstration School Log-Log
1614 School Log-Log C.A.P.
1694 Technical
680 STATOS Reinforced Concrete - System Lüthy/Nussbaum
681 STATOS Pocket Reinforced Concrete - System Lüthy/Nussbaum
690 a Neperlog log-log
CALTEX Petroleum Rietz
DYNSTAT Desktop Impact Testing
Meteo No. 2 Meteorology - early & all black
Panneau Publicitae Demonstration/Display Log-Log
REVACO Hydralic/Pipes/Valves flow rates
REVACO II Hydralic/Pipes/Valves flow rates
ROPLEX Rietz
SHELL Pocket Petroleum Central Heating Efficiency - NL version
SHELL Pocket Petroleum Central Heating Efficiency
SHELL-MEX/BP Pocklet Petroleum Stack-Loss
THERMOCOAX Metrology Electro