Rectangular Refraction Glass Block, 100 x 60 x 18mm Item Type_Dissection Pins supporting pregnancy biology and prenatal-care

supporting pregnancy biology and prenatal-care teaching in health courses

reference-grade for bridge work

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

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

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

Rectangular Refraction Glass Block, 100 x 60 x 18mm Item Type_Dissection Pins supporting pregnancy biology and prenatal-carePairs 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.