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On 3/8/2007, Lynn Bryant wrote:
"This appliance looks amazingly like my own, except I used a hand-operated vacuum pump that I already had on hand. I've been a motor head for decades longer than I've been a rocket head, so the vacuum pump already had time in grade over the turkey baster thingy. A Mason jar purloined unnoticed from my wife's kitchen, a plastic vacuum fitting from AutoZone, a dab of 5-minute epoxy, and viola, an upscale violin! Er, high-altitude test chamber. Whatever."
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The $2 Altimeter Test Chamber

How to test your barometric altimeter with easily available items from your kitchen.

I will not explain how this is made or why you would use it. If you can't figure that out you have no business flying rockets with electronic deployment.

Special thanks to Burl Finkelstein. And to his wife Joanna, because if she didn't do home canning (or if she'd hidden her Mason jars away from Burl) this contraption would not have been possible.

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