US$ 620.00
Four nesting aluminum pails on insulating feet
designed to hold visible iron-filing field lines and support side-by-side magnet-strength comparisons in mechanics labs
Used to determine irregular-object volumes by water displacement
5 ratio favoring intense convergence demos and short-throw real-image formation work
these two-part polypropylene Buchner funnels fit 11-12
Jolly's Photometer Build to Order Four nesting aluminum pails onBrightness comparing Jolly's photometer using a translucent paraffin disc method, the balanced position locating the photometric midpoint between two unequal light sources.