Hyperbolic Match Output

Number:18

Maker:DIETZGEN (USA) Vector Type Log Log

Model:No. N1725

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Scales Back:

Gauge Marks:

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Cursor Back:

Construction:

Date:

Source: PMH Hopp page 161

Information: This plain name without addition of a Microglide or Micromatic title may not exist. Do not have a picture or manual for this slide rule. Need complete information: listing of details of dimensions, physical appearance, scales, gauge marks,cursor lines, etc.