ITEM NAME:25Cm multifunctional pcb ruler measuring tool resistor capacitor chip iS Gw.1 x 25cm Multifunctional PCB Ruler. R-4 gold-plated PCB, high-end atmosphere, high hardness, wear resistance. Commonly used CHIP component: 1.TO252-3 2. SOT223 3.SOT89-3 4.SOT23-6 5.SOT23-3 6. SOD123 7.