US$ 225.00
current to 10A
visualizing Pascal's-principle mechanical advantage directly
or carried between stations
iron filings
Reading Magnifier, 60mm, 20cm Focal Length Material_Acrylic current to 10AChrome plated 60mm reading magnifier extending to a 20cm focal length, the longer focal distance lowering magnification but broadening the visible area on a single page.
US$ 225.00
US$ 23.99
US$ 440.00
US$ 575.00
US$ 175.00