Spherometer with Brass Dial Head and 3 Stainless Steel Legs, 2.5" Subcategory_Wash Bottles Benchtop hydro-electric power station at

Benchtop hydro-electric power station at 13 by 9 by 7

5mm copper wire on an acrylic frame 5

Nineteen-piece electrostatics kit anchored by a gold-leaf electroscope

Polypropylene round test tube rack holding 12 tubes — four at 25 mm and eight at 19 mm — with 360-degree access for benchtop chemistry demonstrations and student experiments

Spherometer with Brass Dial Head and 3 Stainless Steel Legs, 2.5" Subcategory_Wash Bottles Benchtop hydro-electric power station atRadius of curvature spherometer at 2. 5 inches with a 40 mm brass dial head, three stainless steel legs, and a 1 mm pitch micrometer scale from 0 to 10 mm for lens measurement.