UNITED STATES: 1960s: pencil points to lines on chart. Fingers use triangle to draw lines. Hand uses ruler for line drawing.

Name: United States 1960s Pencil Points Lines
Uploaded: 2017-04-05T00:00:00.000Z
Duration: 28 s
Channel: AV Geeks
Description: UNITED STATES: 1960s: pencil points to lines on chart. Fingers use triangle to draw lines. Hand uses ruler for line drawing. Stock Footage Video (100% Royalty-free) 25570691 | Shutterstock

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