US$ 29.99
1uF to 1uF in 0
letting students read image height and position directly off the projected real image during focal-length investigations
Polished-hardwood Wheatstone bridge with five terminal posts
Nylon ball-bearing pulley with a bench-clamp fitting for edge-mounting on a worktable
Reading Magnifier, 100mm, 20cm Focal Length Material_Ceramic 1uF to 1uF in 0Pairs 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$ 29.99
US$ 29.99
US$ 49.95
US$ 29.99
US$ 33.50