Green valley boat works – builder’s notes: making gunwales. the subject of gunwales has also generated a lot of questions, ranging from the simple to the complex, and. Ok, i have my scale model and now it’s time to start making the ‘real’ canoe! just to recap: i decided not to use either the waka ama or ulua plans, but to. Moyer instruments, inc. offers repair or calibration of analytical laboratory instruments such as spectrophotometers, gc, aa, tga, toc, hplc, ph meters, analyzers.