Class A Schellbach Borosilicate Glass Burette with Glass Stopcock, Blue Graduations Capacity:50mL this 2-input XOR gate module

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

diverting a calibrated portion of bench-supply current around the meter coil so the galvanometer reads heavier loads safely

this universal clamp holder accepts rods up to 20 mm in diameter and bolts securely to retort stands for oversized load support

these large rubber vinyl aprons deliver waterproof

Class A Schellbach Borosilicate Glass Burette with Glass Stopcock, Blue Graduations Capacity:50mL this 2-input XOR gate moduleDark Schellbach stripe inlaid behind the scale sharpens meniscus reading during precision titration, paired with a ground glass stopcock for traditional flow control.