Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Disk
Gilson Midget Type IV Version II (Gilson SR Co.)
GilsonUSA
Aluminum
"p 1922, c 1919"Dia = 10.2 cm"Multiplication, division, trig"

Notes: "Niles, Michigan, so manufacturered before 1927"


Image 1




Image 2