IEEE Spectrum on MSN

See the sky like never before with a DIY eyepiece

So I decided to build a low-cost DIY amplifying eyepiece, to make it easier for visitors to observe deep-sky objects but ...
Aerospace Manufacturing and Design

Benchtop dimensional measurement air gage

Sunnen Products Co. launches PGA-1000 Air Gage developed to deliver new precision and confidence in benchtop dimensional ...