OR Logic Gate, 2-Input Pack Size_7 Greatly magnified transverse dicot stem

Greatly magnified transverse dicot stem model on a mounted base exposes vascular bundle arrangement and primary tissue layers for advanced botany teaching

anchoring retort stands and apparatus to the edge of a classroom workbench

5 inches thick

Nylon ball-bearing pulley with a bench-clamp fitting for edge-mounting on a worktable

Used for heavy-gauge coil construction and electromagnet windings

OR Logic Gate, 2-Input Pack Size_7 Greatly magnified transverse dicot stemLED indicating 2 input OR gate module showing HI and LO states with red and green LEDs and a printed truth table on the board, verifying the Boolean disjunction operation by direct observation.