Density Scale
Density is one of the most important identification characteristics of a gemstone. Many stones share similar colors or refractive indices - yet their density often differs significantly.
With this set, density can be determined within seconds, as the scale features a graphically guided density mode that walks the user through each step of the process.
seatboard
Universal movement boards
Of 10 mm thick plywood with grooved strips, to suit long-case clock movements.
Of 10 mm thick plywood with grooved strips, to suit long-case clock movements.