A new train design is being created and safety engineers need to calculate the allowance for this design based on a existing tunnel system with a height of 206.7" and a bilateral tolerance of ±8.0". If the height of new train design is specified to be 137.6" ± 6.0", what is the allowance (minimum clearance) when the train passes through the tunnel?

Idk but maybe a camera?

Photography has changed its subject matter quite a lot over the past few years. in the 1800's, it was considered normal for families to have  post mortem photos of their loved ones, and now that would be completely unacceptable. i think that photographers have always pushed boundaries and have been eager to capture everything, it is just society that changes their boundaries.

Answergiorgio de chirico;