Because of some ongoing health issues, we may not respond as quickly as we have in the past - but we WILL respond as soon as we can. Your patience is greatly appreciated and please email us instead of calling. Thank you, Linda at Relics
Authorized reproduction of this item which is probably circa 1940 and is marked Property of the Singer Sewing Machine Company. It has almost 200 pages of information on Singer needles beginning with their needle size 2 X, as of that point in time. There are application charts with very complete descriptions and measurements for the shank on them. Even more important are the charts so you can also figure out which machine takes which needle and a list of substitutes in case the correct needle is not available.