Folding Hardwood Ruler, 0.5m, Millimeters and Inches Capacity_10000mL Autoclavable plastic test tube slant

Autoclavable plastic test tube slant rack holding 36 tubes up to 25 mm in diameter at a 5 or 20 degree angle

demonstrating Lenz's law through asymmetric induced-current behavior

and economic insect biology for entomology and textile studies teaching

and muscle attachment sites for upper extremity instruction

and a gauge for benchtop setup

Folding Hardwood Ruler, 0.5m, Millimeters and Inches Capacity_10000mL Autoclavable plastic test tube slantBoldface graduations in millimeters on one edge and inches on the reverse of this folding hardwood half meter ruler, fold compact for storage in physics, math, and shop classrooms.