250mm PCB Reference Ruler Chip IC SMD Diode Transistor Measuring Tool For Electronic Engineers

Features:
PCB, high-end appearance, high hardness, wear resistance, can provides long service time.
In addition to the basic measuring functions of millimeter and inch sizes.
It also integrates relevant information for PCB design such as angle gauges, devices, I-C pin spacing tables, Resistor and capacitor chip package, the commonly used diameter reference drill, line width size reference.
An urgent needed measurement tool for electronic enthusiasts, which can be satisfied with all the necessary functions in the design process.