Light table for teaching geometric principles

Details Light table for teaching geometric principles Light table for teaching geometric principles

1992-11-24

1994-08-30

Lazarus, Ira S.

Illumination

Work-table lighting system

362 30, 362 97, 434211, G01D 1128

Patent

active

053433696

ABSTRACT:
A light table includes a housing extending in a horizontal direction having legs extending downwardly therefrom. The housing defines X- and Y-axes and has an X-Y grid pattern formed thereon and visible from above the housing. A lighting system is used to illuminate the grid pattern. A frame extends vertically upwards from the housing and defines a Z-axis having an X-Z grid pattern formed thereon. A second lighting system illuminates the grid pattern on the vertical frame.

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patent: 4974354 (1990-12-01), Hembrook, Jr.

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