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Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
Chemical Slide Rule/ Chimeiomaton G pH
Designed and made by Dr. Oliver Steffens
Germany
Card Stock
c. 2020
Dia. = 17.7 cm
Chemical Industry
Notes:
"1) Used to calculate the proportions of chemical constituents and elements in compounds based on stoichiometry and molar mass. 2) Also used to calculate the pH values of acidic and alkaline solutions, as well as saline solutions."
Image 1