US$ 145.00
Paired dry bulb and wet bulb thermometers on this Mason's hygrometer
and sedimentary samples for deeper classroom identification practice
and home reading
Compact metal-box convection demonstrator at 10 by 4 by 3 inches with two glass chimneys
an octagonal base
Stout-Walled Thistle Funnel, 20cm, Borosilicate Glass Electricity & Magnetism_Circuits Paired dry bulb and wetStout walled thistle funnel in borosilicate glass measures 20cm with thick construction for controlled liquid addition in chemistry procedures.