Silk Cloth Square for Static Demonstrations, 12 x 12" Entomology & Zoology_Entomology Supplies this enhanced optical bench set

this enhanced optical bench set ships with a lamp housing and a matched complement of optical components

and hinge-distance scales

holding volume constant across specimens for isolated density comparisons

Five removable sections separate the enlarged ear into outer

and 26 SWG - sized as the matched replacement set for the PH0730 sonometer

Silk Cloth Square for Static Demonstrations, 12 x 12" Entomology & Zoology_Entomology Supplies this enhanced optical bench setUsed to draw electrons from glass and ebonite rods during rubbing, this silk square gives friction rods a strong positive charge for triboelectric and electrostatic demonstrations.