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TCoCD Pictures Mathematical Instruments Proebster Proportional Dividers

Proebster Proportional Dividers
Proebster proportional dividers (click for larger image, 37k)
front side (click for larger image, 37k)

Proebster proportional dividers (click for larger image, 36k)
back side (click for larger image, 36k)

Proebster proportional dividers (click for larger image, 52k)
detail (click for larger image, 52k)

manufacturing date  
material Alpaka (German Silver)
with steel tips
size:   length
  weight
200 mm
94 g
TCoCD Pictures Mathematical Instruments Proebster Proportional Dividers

back to the main page  Mathematical Instruments  no previous instrument  The Collection of Calculating Devices  next instrument: Riefler Proportional Dividers 
Deutsche Version
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