> The all plastic ones are intrinsically safe in a potentially flammable environment Never thought of that, and I used to work in an ATEX environment where cal

> The all plastic ones are intrinsically safe in a potentially flammable environment Never thought of that, and I used to work in an ATEX environment where calculators powered by watch batteries had to be carefully logged and carried across to a "safe" area inside a special (horribly expensive) Peli case.