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1 Sept 1950 Jahr - OHP

Beschreibung:

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.

Zugefügt zum Band der Zeit:

STEM 12-E Group 1 MIL Timeline

ByJasper Responte
18 Dez 2019
1
0
879

Datum:

1 Sept 1950 Jahr
Jetzt
~ 74 years ago

Abbildungen:

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