The Perfect Pin Gauge

Measure pin diameters from 0.3mm to 1.25mm
Measure pin lengths up to 75mm

Made of stainless steel for lifetime durability
Credit card size for ease of use

How does it work?
Place the middle of the pin to be measured in the wide area of the slot
Move the pin towards the narrow end of the slot until it stops
Read the pin diameter on the scale
Slide the pin to the larger end of the slot to remove it