Ready reckoner for screw threads

Made:
Germany
Ready reckoner for screw threads, German, metal

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Ready reckoner for screw threads, German, metal
Science Museum Group
© The Board of Trustees of the Science Museum

Ready reckoner for screw threads, German, metal, by or for Dinorm

Details

Category:
Mathematics
Object Number:
1990-702
Materials:
brass
Measurements:
overall: 3 x 250 x 50 mm
type:
ready reckoner (engineering)
credit:
Auction Team Koln