Rectangular Refraction Glass Block, 100 x 60 x 18mm Item Type_Dissection Pins Twelve-position rotary capacitance substitution box

Twelve-position rotary capacitance substitution box selecting one capacitor at a time

sized for cross-bench reach in small-scale electronics work where 4mm hardware is too large

bottle in borosilicate glass holds 125mL with glass stopper for biological oxygen demand testing and water quality analysis

supplying both current types to a single workstation for circuits and electromagnetism

Rectangular Refraction Glass Block, 100 x 60 x 18mm Item Type_Dissection Pins Twelve-position rotary capacitance substitution boxPairs 100 by 60mm with 18mm thickness on a glass rectangular refraction block, the larger working face giving longer beam paths for measurable lateral displacement studies.