8-Piece Plastic Sieve Set with Stainless Steel Mesh Subcategory_Anatomy Models LED-indicating 2-input OR gate module

LED-indicating 2-input OR gate module showing HI and LO states with red and green LEDs and a printed truth table on the board

the second universal-logic gate that complements the NAND for any digital-circuit construction

and rectangles

securing rods and posts up to 40 mm thick across laboratory stand configurations

digital display that allows you to setup experiments

8-Piece Plastic Sieve Set with Stainless Steel Mesh Subcategory_Anatomy Models LED-indicating 2-input OR gate moduleEight plastic framed sieves with stainless steel mesh graduate from coarse to fine for sorting particles by size in geology, soil science, and lab prep.