Premium High Resolution Acrylic Spring Balance with Dual Scale Chemical_Bismarck Brown 3 glass features 14/23 cone

3 glass features 14/23 cone with round end for sealing ground joint vessels and chemistry apparatus

tracheal system

and qualitative cation-identification work

Quartzite hand sample measures 3 inches with recrystallized quartz texture so hard it scratches glass for metamorphosed sandstone identification

Wall-powered halogen ray box producing convergent parallel rays bright enough to trace in normal classroom light

Premium High Resolution Acrylic Spring Balance with Dual Scale Chemical_Bismarck Brown 3 glass features 14/23 coneDual grams and newtons scale on a zero calibratable acrylic spring balance with high resolution subdivisions for precise force and mass measurement in teaching labs.