Mechanical Stop Watch, 1/10 Second Subcategory_Boiling Flasks Life-size right lung separates into

Life-size right lung separates into two parts exposing bronchial tree and alveolar structure

well suited to demonstrating the force on a current-carrying conductor in a magnetic field

collecting water displaced by a submerged object for volume calculation in Archimedes-principle demonstrations

supplied in a storage case for student precision work

Glass displacement vessel in borosilicate glass holds 500mL for density measurement

Mechanical Stop Watch, 1/10 Second Subcategory_Boiling Flasks Life-size right lung separates intoBattery free analog mechanical stopwatch reading to one tenth of a second, providing repeatable timing for physics classroom demonstrations and student laboratory experiments without power.