We have promoted this device for many years as a way to compare glaze melt fluidity, surface tension, bubble retention, crystal growth, transparency, melting range, etc. Download the Fusion 360 file using the link below.
A Low Cost Tester of Glaze Melt Fluidity
This device to measure glaze melt fluidity helps you better understand your glazes and materials and solve all sorts of problems.
Melt flow test 5v1 Fusion 360 3D file
Melt Flow Tester 3D Scan STL file