I'm dealing with two contractors for my house: one who drills wells and one who designs and installs solar electric systems. The solar guy sent me spec sheets on solar panels, with dimensions in inches and millimeters. I took the dimensions and added some panels to the roof of my POV-Ray model, which is in millimeters, and we've been talking in metric. The well guy talks in "gpm" and "psi" even after we went to the site with my fifty-meter tape and I showed him how to compute the power in watts from the depth in meters and the flow rate. I told him how many kilopascals are in a bar (bars are fairly common on pressure gages). How can I persuade him to talk in metric? I'm not about to drop him; two of my neighbors have had wells dug by him, so he knows the area.
This house is a metric project; the horizontal module of the walls is 200 mm, ironically because 400 mm is the spacing of 16 in blocks laid without mortar. The vertical module is 197 mm (I'll have to check that on a sample building), which means the doors and windows will have to be custom-made. Pierre -- li fi'u vu'u fi'u fi'u du li pa
