6-Prong Thermal Conductivity Apparatus with Mixed Metal Prongs Glass Flasks_Erlenmeyer Flasks this hair-element hygrometer uses fiber

this hair-element hygrometer uses fiber expansion and contraction on an 85 mm dial

designed so seated students read the needle without parallax error from a steep viewing angle

fine print

and gauze-fronted object and receiving screens form this 1

Three-limbed glass tube on a 61cm-scaled wooden stand with a pinch clamp on the center limb

6-Prong Thermal Conductivity Apparatus with Mixed Metal Prongs Glass Flasks_Erlenmeyer Flasks this hair-element hygrometer uses fiberSix pronged conductometer with 3. 75 inch sample rods in aluminum, brass, copper, stainless steel, and iron, comparing heat conduction rates through wax drops on each prong.