HOOKUPZ* 2.0, Universal Smart Phone Optics Digiscoping Adapter, Optics with an eyepiece of 25-58mm, For Binoculars, Spotting Scopes, Monoculars, Telescopes, Microscopes, Incompatible for riflescopes and tablets, Fits ipods, iphones, Galaxy, Motorola and HTC phones
Hall Effect Apparatus, Features: n-type GaAs Hall sensor chip, Two-axis mechanical traverse for field plotting, 3-1/2 digit current and voltage meters, Metal storage case for the Hall Effect board, Reversing switch for exploring the elimination of systematic error
Basic Hall Effect Apparatus, Provides contact, power supply and support to a germanium crystal on a circuit board, application: Extrinsic and Intrinsic conductivity, Mobility of electrons & holes, Weight: 0.5kg, Power supply: 12V AC, dimension: 180X110X50mm3