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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Linear
1447DP Overhead Projection
Post
Japan
Plastic
20 cm
Overhead Projection in Classroom
Notes:
This transparent rule is designed for use on a classroom overhead projector. The scales are identical to the Post 1447 slide rule.
Image 1
Image 2
