Scientific

Protractor This technical instrument can be used for inscribing circles or arcs. As dividers, they can also be used as tools to measure distances, in particular on maps. Compasses can be used...

Psychrometer Sling ** The sling psychrometer is used to measure relative humidity.

Magnified Pulmonary Alveoli Model The model shows the small branches of principal bronchus: 1. Section of bronchiole of no cartilage. 2. The relation between pulmonary alveoli and terminal...