PM Watch Mainspring Catalog & Guide - reprint

P. Mereminsky - PM - Watch Mainspring Catalog & Guide covering the complete array of mainsprings distributed by PM from sometime starting in the late 1940's or early 1950's, reprint. This is an exceedingly handy guide for the watchmaker as it covers identification of PM's mainsprings for American and Swiss watches.  It is also a pretty nice and durable reprint of the catalog that is 8 1/2 x 11 that comprises 43 pages. Images do a suitable job of representing the item.