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sep 1, 1950 - OHP

Description:

Overhead Projector

It is made up of a base with a clear glass top housing an interior light and an adjustable arm with a lens and a mirror.

A transparent sheet is placed over the glass top. and the machine "projects" the sheet's writen material onto whatever surface the lens is facing.

Added to timeline:

STEM 12-E Group 1 MIL Timeline

ByJasper Responte
18 Dec 2019
1
0
875

Date:

sep 1, 1950
Now
~ 74 years ago

Images:

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