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A.W. Faber: Bitzer Kuelmaschinenbau

A.W. Faber Bitzer Kuelmaschinenbau Pocket Refrigerant

Details of: A.W. Faber - Bitzer Kuelmaschinenbau

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 Refrigerant
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 Duplex
Material? Basic description: ivory/bone/wood/bakelite/plastic/metal/cardboard or combinations e.g. wood/veneered, wood/painted, etc 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. 15cm
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. Inch,cm,§,§,§
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). §,§,§,§,§,§,§,§
Cursor type? Basic description (incl. material) + no. of hairlines, etc on any cursor(s) or alternative to a cursor - e.g. a stylus clear plastic - 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 1950s
Extras? Basic description of any accessories - e.g. case or stand + where relevant, an accreditation for image, etc dark green stitched imitation leather pouch
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

Special commission for Bitzer Kuelmaschinenbau GMBH (still operating) - 1 of only 2 such Faber/F-C made SR’s with no slide - possible forerunner & inspiration for later Danfoss made models

In-Out? MM-YYYY / MM-YYYY of the date added/left the collection or <YYYY if exact MM-YYYY no longer known 01-2018/

All of:  A.W. Faber new search?

(350) Enhanced Mannheim
(368) Electro
308/S Pocket Enhanced Mannheim
332 Pocket Mannheim
339 Mannheim
368 (ver. 2) Electro
373 Lilliput Mannheim
380 Desktop Enhanced Mannheim
51/39/339 School Mannheim
51/87 Rietz
51/91 School Enhanced Mannheim
52/22 School Business
52/39 Mannheim
52/39/355 School Mannheim
57/22 School Business
Bitzer Kuelmaschinenbau Pocket Refrigerant