Simple Machines Simple Lever Model Subcategory_Spectroscopy Beech wood test tube rack

Beech wood test tube rack accommodates 13 tubes up to 25mm diameter in a 10

Hand-painted animal cell model reveals organelle structures

this fan-shaped nylon brush rides a twisted stainless steel handle flexible enough to bend around difficult interior angles

Wooden fulcrum-balance simple-machine model with a sliding pivot

this metal helix lets stairwell-scale wave-propagation experiments amplify the visibility of standing waves

Simple Machines Simple Lever Model Subcategory_Spectroscopy Beech wood test tube rackSeventeen and a half inch wooden simple lever apparatus with an adjustable fulcrum on an 8. 625x2. 25 inch base, supporting both qualitative and quantitative force vs distance student investigations.