CTA A308 Offset Valve Tappet Gauge Set, 11 Blades Ranging from 0.004" to 0.014"

Part Number: A308. Q: What is the purpose of the offset design in the CTA A308 Valve Tappet Gauge Set?. Q: How many blades are included in the CTA A308 set, and what are their sizes?. Q: Is the CTA A308 suitable for both professional and DIY use?.