Check the listing for details. Vintage Davis Model FA A2 Machinist Alignment Gauge Precision Tool USA. Condition: Used. Listed at 53.26 USD. The Vintage Davis Model FA A2 Machinist Alignment Gauge is a precision tool used for aligning machinery components. Made in the USA, this tool is a valuable collector's item for those interested in vintage machinery and tools. With its high quality craftsmanship and historical significance, this alignment gauge would make a great addition to any machinist's or collector's collection.