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Before digital devices, the way to record long-term data was to smack a needle on a slowly moving piece of paper to generate a series of data points that could be referred to later. This device is probably from the 70s, and stickers indicate it was last inventoried in 1984. I assume it sat on the shelf until tonight, when I plugged it in.

It's quite responsive to both temperature and humidity, and seems to be driving the roll and needle properly.

Here's a video of operation: https://vid8.poal.co/user/stultusavem/tHtrlrl?autoplay=off

This one sees to be standard, moving at 1IPH, consuming 2 feet of paper per day of recording.

Before digital devices, the way to record long-term data was to smack a needle on a slowly moving piece of paper to generate a series of data points that could be referred to later. This device is probably from the 70s, and stickers indicate it was last inventoried in 1984. I assume it sat on the shelf until tonight, when I plugged it in. It's quite responsive to both temperature and humidity, and seems to be driving the roll and needle properly. Here's a video of operation: https://vid8.poal.co/user/stultusavem/tHtrlrl?autoplay=off This one sees to be standard, moving at 1IPH, consuming 2 feet of paper per day of recording.

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[–] • 1 pt

Get some suction cups and wires and prank your friends its a lie dector.