Human Respiratory System Anatomical Model on Wooden Board, Hand-Painted Item Type_Dissection Pins and prism holder with a

and prism holder with a 25 x 25mm glass prism on a metal base

and troubleshooting exercises

Larger 100 by 25 by 35mm right-angle acrylic prism

An 18mm pole gap on this 37 x 13 x 10mm Alnico U-shape concentrates field strongly enough to bend filings into clear field lines

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

Human Respiratory System Anatomical Model on Wooden Board, Hand-Painted Item Type_Dissection Pins and prism holder with aHand painted labeled respiratory system mounted on a wooden board shows nasal cavity, pharynx, larynx, trachea, and bronchial tree for classroom wall display.