Ellen, While I don't use a manometer I have utilized the services of a womanometer on occasion. I bring Leslie with me on inspections and if she says it isn't right it flat out isn't right. Getting serious now I believe, at least from my perspective, the use of such monitoring devices is so far fetched from reasonable standards of practice, not to mention standard of care, that it is not warranted. If we go to far in this direction then we will soon set up laser particle counters in order to inform our clients that there are too many airborne particles in the indoor air which could contain fungal spores, dust mites, bacteria, viruses, and a whole plethora of other contaminates which may or may not have an effect on them. Keep it simple and accurate and you won't go wrong. Go too far and it doesn't end. NORM SAGE