US$ 57.00
illustrating how differential thermal expansion makes and breaks a low-current circuit
1100-turn copper coil on a bobbin sized for a double C-core
internal structures
For measuring the specific gravity of light liquids
Polished-hardwood Wheatstone bridge with five terminal posts
Reading Magnifier, 100mm, 20cm Focal Length Material_Ceramic illustrating how differential thermal expansionPairs a 100mm aperture with a 20cm focal length for the lowest magnification in the chrome framed reading magnifier line, well suited where breadth of view matters more than zoom.
US$ 57.00
US$ 67.00
US$ 67.00
US$ 160.00
US$ 62.00
US$ 62.00
US$ 62.00
US$ 195.00
US$ 62.00
US$ 89.00
US$ 122.00