Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material		DateScale LengthArea of Use
Disk
Teledyne Decimal & Metric Equivalent
Teledyne Turbin EnginesUSA
Plastic
est. 1970'sDia. = 10.2 cmMachining

Notes: Used to find decimal to metric conversions and also fraction equivalents


Image 1




Image 2