Mercury Trough Rod Size_23.6" Offering four-decade rotary selection from

Offering four-decade rotary selection from 0 to 11

Long-format 150 x 10mm chrome-steel cylinder pair with half-red

this 2-input XOR gate module shows HI and LO output states with red and green LEDs and a printed reference

controllable flame shape during laboratory heating

Nickel-plated T-pins provide secure specimen pinning with broad heads for stable dissection board mounting in biology laboratories

Mercury Trough Rod Size_23.6" Offering four-decade rotary selection fromGlazed porcelain mercury trough at 75mm diameter with interior and exterior glazing, chemically resistant for collecting gases over mercury in pneumatic trough experiments.