US$ 27.95
dropping freely through the ring when cool but stopped by the ring once flame heating expands the ball
this clear dial provides a readable face for measuring angular displacement in physics setups
reproductive organs
100 by 100mm friction slider
and ungraduated design for liquid addition
Human Respiratory System Model, Half Life Size, with Head, Throat, and Lungs Ag Mechanics dropping freely through the ringLongitudinal head throat lung cross section reveals the full air pathway from nostrils through trachea to alveoli at half life size for respiratory teaching.
US$ 27.95
US$ 73.42
US$ 77.95
US$ 45.99
US$ 17.00
US$ 64.95