Home made Gold cootie key.
The last of several configurations on the way to a swiper with a good feel... Gold-plated, 1x3x4-in. brass base, gold contacts. To retain stiffness yet allow suitable flexibility, the armature is of triple-thickness thin brass stock, except for about an inch of single thickness at its mounting post. Knob is of rosewood... A sweet to use! [W9OK].