Fire hydrant cutaway.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...1_fullsize.jpg
Fullsize image: https://s3-us-west-1.amazonaws.com/h...2_fullsize.jpg
Previously:
Circuit breaker cutaway - photo
Reel-to-reel tape recorder cutaway - photo
Cutting torch cutaway - photo
Chiller compressor cutaway - photo
Golden Gate bridge cable cutaway - photo
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