Digital Quartz Stopwatch, 1/100 Second Precision Material_Wood Machined six-metal conductivity rod set

Machined six-metal conductivity rod set (iron

this 6-inch Alnico bar pair extends field lines visibly along the magnet body for full-class iron-filing demonstrations

Used to introduce known resistance into a circuit by removing brass plugs from sealed coil contacts

Used to introduce photoconductivity and light-controlled circuits

bottle in borosilicate glass holds 125mL with glass stopper for biological oxygen demand testing and water quality analysis

Digital Quartz Stopwatch, 1/100 Second Precision Material_Wood Machined six-metal conductivity rod setQuartz driven digital stopwatch with 1 100th second precision and a built in alarm, displaying hours, minutes, seconds, date, and month on a multi function readout for lab and classroom timing.