ASTM Low Form Borosilicate Glass Beaker with Dual Scale Material_Hardwood supplying the plastic-coated counterpart to

supplying the plastic-coated counterpart to bare copper for circuit wiring where exposed conductor must be avoided

Used as the positive-rail counterpart to the long black lead

5 lb powder-coated base minimizes bench usage while stabilizing a 20 inch 12mm rod for apparatus support

Focuses sunlight through a 30cm parabolic reflector onto a black copper target cup

ASTM Low Form Borosilicate Glass Beaker with Dual Scale Material_Hardwood supplying the plastic-coated counterpart toASTM compliant low form borosilicate 3. 3 glass beaker with dual scale white graduations and a pour spout, used for routine heating, mixing, and measuring tasks.