Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Disk
"Circular Log-Log Slide Rule ""Pierre Vernier"""
Designed and made by Dr. Oliver SteffensGermany
Card Stock
2020Dia. = 19.4 cmEngineering calculatons

Notes: General engineering and science calculations using spiral scales and a vernier cursor


Image 1