| Manufacturer: | 
  Keuffel and Esser | 
  | Country of Manufacture: | 
  U.S.A. | 
  | Type: | 
  4083-3 Log Log Duplex Vector | 
  | Number: | 
  789047 | 
  | Date of Manufacture: | 
    | 
  | Scales: (Front) | 
  L, LL1, DF [CF, CIF, CI, C] D, LL3, LL2 | 
  | Scales: (Back) | 
  LL0, LL00, A [B, T, ST, S] D, Th, Sh2, Sh1 | 
  | Number of Scales: | 
  21 | 
  | Gauge Points: | 
  π, q, e | 
  | Slide Rule made from: | 
  Bamboo and Plastic with Metal End Pieces | 
  | Cursor made from: | 
  Glass with Metal Frame | 
  | Cursor Lines: | 
  1 front, 1 back | 
  | Overall Length of Rule: | 
  31.8 cm | 
  | Length of Scales: | 
  25 cm | 
  | Width: | 
  4.1 cm | 
  | Depth: | 
  0.6 cm | 
  | Weight: | 
    | 
  | Acquired from: | 
  Jon Schneck | 
  | Date: | 
  Jan 2001 | 
  | Condition: | 
  Medium | 
  | Accessories: | 
   Leather case. Poor condition
 Arrived with broken cursor. Cursor replaced
 with one from 4080-3
  | 
  | Comments: | 
   
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