| Type | Technical drawing |
|---|---|
| Country of Origin | United Kingdom |
Check the listing for details. Triangular rulers Boxwood, scale or Dennert Aristo Analogue technology Vintage. Condition: Used, Made in United Kingdom. Listed at 23.06 USD. The white plastic ruler is made by Dennert and Pape of Hamburg. This one is Aristo model 1314B. The boxwood triangle is a scale ruler. One side has a blue middle strip, one is red, and the other is blue.
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