Blue Epoxy Wire Test Tube Rack, 36-Hole (6 x 6), for 10-13mm Tubes Subject_Anatomy Highest-decade single-dial resistance box stepping

Highest-decade single-dial resistance box stepping from 100k to 1M ohms in 100k-ohm increments

the standard 30-60-90 geometry giving classic deviation behavior for comparing against equilateral and wedge geometries

75-inch full-class units

Hand-painted pigeon dissection model with numbered structures reveals avian internal anatomy and flight adaptations for ornithology teaching

Blue Epoxy Wire Test Tube Rack, 36-Hole (6 x 6), for 10-13mm Tubes Subject_Anatomy Highest-decade single-dial resistance box steppingSquare 6 by 6 layout in blue epoxy coated steel wire holds 36 small test tubes from 10 to 13 mm, pairing a compact footprint with chemical resistant rack construction.