Well, true, but that is because the present level is not zero. The inhalers show an incorrect "over present limit" level. The other thingy shows a correct "below present level" reading. Since it's below the current level, "Thank you, Sir, just a false positive on the sniffer, have a good night".Originally Posted by scumdog
But the "below present level" would still be over a zero limit. So, with a ZERO limit it would be "OK Sir that a 2 whassy per doohickey reading. That's not zero. So you're under arrest"
Actually there are sufficent alcohol type molecules in exhaust emissions that you could probably record a non zero level (very low, but non zero) just from breathing in the traffic fumes waiting in line to be tested. Then there is the question of the accuracy of the gadget. Certainly fine for present limits (so what if it's 0.1 out - the difference between 799.9 and 800 is meaningless).But what if the reading is 0.1. That's not zero.
There is no evidence at all that such very low levels (1 or 2 thingwhatsits per wossiname) have any effect whatsoever on driving (or any other) ability.
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