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

DIWA (Dansk Industri Waterpas A/S ): 710 Teknilog

DIWA 710 Teknilog Technical

Details of: DIWA (Dansk Industri Waterpas A/S ) - 710 Teknilog

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). Technical
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 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. 25cm
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 LL01,LL02,LL03,A / B,L,K,C / D,LL3,LL2,LL1
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 LL00,ST,T,DF / CF,CIF,CI,C / D,P,S,LL0
Cursor type? Basic description (incl. material) + no. of hairlines, etc on any cursor(s) or alternative to a cursor - e.g. a stylus duplex all plastic - 1 hairline + 3 peripheral hairlines on front & 1 peripheral hairline on back
Condition? Cn where n = 0-6  condition/quality scale where 0 = brand new in box & 6 = broken   C0
Date? YYYY for year(s) of production or an approximation/range of years 1960-1979
Extras? Basic description of any accessories - e.g. case or stand + where relevant, an accreditation for image, etc black & white plastic tube + outer blue & yellow cardboard box+ image courtesy of ISRM
Instructions? Details like “on back of rule” and/or language of instruction sheet/booklet - generic or instructions for common layouts usually not listed Danish in box
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

Impressive complement of scales but possible OEM by Japanese maker Ushida Yoko

In-Out? MM-YYYY / MM-YYYY of the date added/left the collection or <YYYY if exact MM-YYYY no longer known <2005/

All of:  DIWA (Dansk Industri Waterpas A/S ) new search?

1-1 Rietz-Ideal Rietz
101 Log Log Log-Log
201 Technical (ver.1) Rietz
201 Technical (ver.2) Rietz
301 Commercial Enhanced Mannheim
301 Rietz Rietz
501 Rietz Rietz
551 Darmstadt
601 Pocket Promotional Rietz
601-1 Pocket Rietz
611 Pocket Electro
621 Technical Pocket Rietz
631 Commercial Pocket Enhanced Mannheim
701 Rietz
710 Teknilog Technical
741 Businessman Export Technical two-tone