These solid borosilicate glass beads can be used as distillation column packing, boiling stones or to provide support for chromatography columns used in gel filtrations. Borosilicate beads have excellent chemical resistance. Diameter and spherical variation maximum is 10% of glass bead diameter. Sold in one pound plastic jars.
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Meter stick made of hard maple with lacquer finish. 1" wide x 5/16" thick. Both edges one side have centimeter markings with each centimeter mark numbered and every ten centimeter in bold numerals. Each centimeter is divided into millimeters. Reverse side is divided into inches and eights. Choose plain ends or metal tipped.
English or Metric scale micrometers have a dull chrome finish. Friction stop, locknut, adjustable for wear. English scale is 0 to 1 inch, .001 graduations. Metric scale reads 0 to 25mm, 0.01mm graduations. Comes in padded plastic case.