Archive
of
Collections
Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
270N
Concise
Japan
Plastic
Current
Dia. = 10.0 cm
General Purpose
Notes:
An update of the model 270 including trig scales on the reverse side
Image 1
Image 2
Image 3
Image 4
