Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Disk
Gilson Midget Type III Version I (Gilson SR Co.)
GilsonUSA
Aluminum
"p 1922, c 1919"Dia = 9.8 cm"Multiplication, division, trig"

Notes: "Niles, Michigan [NOTE - ALL MIDGETS BELOW HAVE A BLACK PLASTIC CYLINDER IN THE CENTER TO HOLD THE SR LEVEL IN THE SCANNER]"


Image 1




Image 2