US$ 23.98
dropping resistance as temperature rises and giving an introduction to temperature-dependent semiconductor sensors
sized for fine soldering work on circuit boards and small electronic components
this hair-element hygrometer uses fiber expansion and contraction on an 85 mm dial
Auxiliary accessory set for the demountable transformer system
Reading Magnifying Glass, 50mm, 15cm Focal Length Gifts_Bar dropping resistance as temperature risesPlastic handled 50mm reading magnifier with a 15cm focal length, doubling as a lab demo lens for focusing sunlight and investigating image formation with convex optics.
US$ 23.98
US$ 30.99
US$ 55.95
US$ 61.95
US$ 29.98
US$ 104.95
US$ 56.00
US$ 96.00