Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Linear
PIC No 4880/PC18G
PIC-ThorntonEngland
Plastic on wood
est 1950-1960's25 cmGeneral Purpose

Notes: 1) Has a short inverse tangent and inverse sine scale 2) Has a short sine and tangent scale


Image 1




Image 2




Image 3