Features: 1. 7.8inch R-4 gold-plated printed circuit board with high hardness and good wear resistance 2. Basic functions for measuring millimeters and inches 3. The multi-function printed circuit board scale integrates information about the printed circuit board design, such as angle meters, devices, and IC pin pitch tables. 4. High accuracy scale and it is convenient to use 5. This is a good tool for electronic enthusiasts Specification: Condition: 100% Brand new Positive Situation Measuring Length: 20 cm Measuring Length: 7.8 inches Common IC Package: SOT89, SOT8, SOP16, SOT363, 3225, SOD80, MARK, TQFP64. Common Resistor-Capacitor Patch Packages: 0201, 0402, 0603, 0805, 1206, 1812, 3216, 3528, 6032, 7343. Universal Aperture Reference Size (unit: mm) Straight Sot Negative Situation: Common Line Width Reference (unit: mil) Angle Measurement: 180 degrees Equipment, IC pin spacing table: 0.5mm, 0.635mm, 0.65mm, 0.8mm, 1.0mm, 1.27mm, 2.0mm, 2.54mm; Common MOS, diode, transistor package: SOT23, SOT223, SOT25, TO252, D2PAK, SMA, SMB, SMC. Color: Black Size: Approx. 21 x 4cm / 8.3 x 1.6in Package List: 1 x Measuring Tool 1、7.8inch R-4 gold-plated printed circuit board with high hardness and good wear resistance 2、Basic functions for measuring millimeters and inches 3、The multi-function printed circuit board scale integrates information about the printed circuit board design, such as angle meters, devices, and IC pin pitch tables. 4、High accuracy scale and it is convenient to use 5、This is a good tool for electronic enthusiasts