Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Disk on rectangle
CTCS-552
ConciseJapan
Plastic
1973Dia. = 3 cmChemistry & Conversion

Notes: Sama & Etani (Boston) Circular SR with elements table + internal pull out constants & data card


Image 1




Image 2