Norma Mercuria 190

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Country of manufacture: Germany,            Date of manufacture: ____
Diameter: 18.9 cm,      Weight: ~213 gms
Materals: simplex design, painted metal disks.
Cursor: transparent plastic cursor, one line on front only
Scales: 6
Front: C [ D, DI, %, %, conversion factors]
Back: blank
Gauge Marks: [ π, .333, .667, PS (632), kW (465), plus others specialized for Graphics/Typography industries ]
Condition: C2 (Mint but no manual; case torn slightly)
Came with: Original black plastic case (small tear in plastic) with instructions printed on back

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                                      Front of rule                                                                     Back of case
  

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