"The Stone Pond" Water stone system
From the manual: Your Stone Pond is designed to be a self-contained sharpening station. It can be used to clamp your stones while they are in use, to store them when they are not in use, and to keep them perfectly flat so that they can be used effectively. The system is designed to be used in freehand sharpening or with an on-stone honing guide.
It has two clamping bars so that you can have both a coarse stone and a fi nishing stone clamped in the case at one time. The box is designed so that the stones are at the very top edge of the case; this gives you good clearance when you leave your chisel or plane blade clamped in a honing guide while working alternately on the bevel and on the back of the blade.
See additional file on this page for the full manual.