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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk / Plate
Recht Chem-Formulator
Perless Printing Co. for Christon Recht
USA
Card Stock
c. 1959
Dia. = 18.8 cm / 20.3 cm x 20.4 cm
Chemical Formulation
Notes:
Used to assist in writing chemical formulas
Image 1
Image 2
