![A Rustrak dual-channel paper chart recorder [3024x4032 - 950KB]](https://pic8.co/sh/MwcTXD.jpg){kind=link}
Get some suction cups and wires and prank your friends its a lie dector.
Get some suction cups and wires and prank your friends its a lie dector.
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.
(post is archived)