Brass Ring and Ball for Thermal Expansion Demonstration Lab Supplies_Clips sized for precision-resistor and thermocouple

sized for precision-resistor and thermocouple work where stable resistance matters

the bulky triangular geometry handling wider beams for total internal reflection

the gentler curvature softening divergence while still producing reduced virtual reflections

the f/4 curvature stretching the focal throw for projection-style image formation and reflector telescope analogues

Pairs 75 by 50mm with 18mm thickness on an acrylic rectangular refraction block

Brass Ring and Ball for Thermal Expansion Demonstration Lab Supplies_Clips sized for precision-resistor and thermocoupleBuilt for the classic thermal expansion demonstration, this brass ball and ring fit freely at room temperature and stick tight once the ball is heated and expanded.