New Page — Lehman Seismograph Construction Notes

I have added a new page under Seismology/Lehman Seismograph section in response to occasional questions about the construction details of my Lehman seismograph.  I have included some rough dimensions and general layout but in my experience following them exactly is not necessary.  A quick scan of the web based collection of Lehman projects shows an amazing array of designs which apparently work.  The Lehman concept is very forgiving, at least within broad constraints.

I have tried to answer questions I have already received and will add additional material if new questions arise.