5-Metal Hooked Density Cylinders Set (Copper, Tin, Aluminum, Zinc, Stainless Steel) Capacity_17mL illustrating late-pregnancy presentation for obstetric

illustrating late-pregnancy presentation for obstetric and reproductive anatomy teaching

Rotary-knob resistance substitution board offering twelve discrete values from 33 ohms to 10M ohms with 4mm lead connections

Built for cell-structure comparison

Food-grade peroxide test strips in a 50-strip vial calibrated for the 3 to 10 percent concentration range

this wooden simple-machine model lets students measure input effort against output splitting force at different wedge angles

5-Metal Hooked Density Cylinders Set (Copper, Tin, Aluminum, Zinc, Stainless Steel) Capacity_17mL illustrating late-pregnancy presentation for obstetricFive cylinder equal mass set with hooks in copper, tin, aluminum, zinc, and stainless steel, each 30g with lengths varying by density for water displacement and calorimetry work.