US$ 122.11
all faces polished and packaged in a wooden storage box
and cross-section
Used to extend the curvature-vs-charge-density study to larger geometries
Three-times life size cross section exposes cortex
suited to transferring crucibles around open-flame chemistry work
Economy Handheld Spectroscope, 6-Pack Capacity_10mL all faces polished and packagedDiffraction grating spectroscopes with a rotating slit cap, supplied as a small group pack for identifying visible light wavelengths from lamps and discharge sources.
US$ 122.11
US$ 19.99
US$ 172.06