Hardwood Test Tube Rack for 12 Tubes, 22mm Rod Size_23.6" Triple tandem plastic pulley with

Triple tandem plastic pulley with 25/38/50mm ball-bearing wheels on an open-sided 17

and amplitude

sized for the next step up from the 100uA meter when small-signal circuits exceed its full-scale deflection

this decade resistance box substitutes for fixed resistors in circuit experiments

the smallest in the Alnico horseshoe series and well sized for individual student handling during basic attraction-and-repulsion lessons

Hardwood Test Tube Rack for 12 Tubes, 22mm Rod Size_23.6" Triple tandem plastic pulley withPolished hardwood test tube rack with a traditional two tier design, holding twelve tubes up to 22 mm diameter for classroom and professional bench setups.