I find it funny the amount of people making excuses for the lack of such a simple request. "People are on vacation" "People are busy" "After sales is much better".
It doesn't take half of the staff to find a measuring device, be it a ruler, tape or any modern electrical devices, then place it next to a factory demo an get a proper answer. Buck up, money is tight, and if you want a chunk of mine, you must be willing to show me you'll earn it.