Can I Leave a GPS in a Hot/Cold Car

Although if you look in a supermarket, almost every container is dual marked with metric and non-metric units on the label. Unfortunately, voluntary metrication (i.e. metric-only labels) is illegal. One of several laws forbidding voluntary metrication in the US is the FPLA at

There is a lobby (including global companies like Proctor&Gamble who sell soap powder) trying to get such laws changed so that they can reduce the costs of repackaging or relabeling. For them, the laws forbidding voluntary metrication are a technical barrier to trade.

(e.g. under the seat)

My short answer is "Yes".

My long answer is: Electronic products often have standard temperature specifications at fixed values. This makes it easier for component suppliers and buyers. There is usually an operating range and a wider storage range. I would expect to see values of -10, -5, or 0 degrees Celsius for cold operation. I would expect to see values for hot operation of

I would expect a modern gps unit (e.g. Tomtom) to be specified to

Temperature extremes can reduce performance. It will probably reduce battery life. A car on a hot day can exceed those values. The temperature below the seat or in the trunk will be lower than on the dash. However, as other have said, car radios survive and you probably need to worry more about losing your gps by theft than by temperature.

Al wrote in news:3kN7k.5952$JL.1587@trnddc05:

That is incorrect. It would be better to say that 'the melting point of common substances' are not effected by the small changes in pressure seen in the everyday environment.

On the other hand, hydrogen only becomes a solid under pressures never seen in our common environment but metallic hydrogen may be a common material found on some giant planets. Water, on the other hand, is one of the few substances that expands upon freezing and melts when under pressure. If it didn't, ice skates would not work. The pressure of the skate blade raises the melting point of the water so high that the blade 'floats' on a thin layer of water 'melted by the pressure' from the ice.

So, one must be careful NOT to say that 'the melting point... is not dependent upon environmental conditions'.

As an example, cooking something out of a box like RiceARoni requires more or less water depending on the altitude. Living here in Utah at 4500 feet above sea level rewuire nearly a cup more water to cook this in.

The rest of the world is wrong and I am right.It is F. cuhulin