I just know that Thursday of next week, I will need a piece of 3/16" OD stainless tubing about two inches long with say, 0.01" thick walls. I won't remember the two pieces of perfectly suitable stainless tubing that I almost threw away tonight, each 4.5" long. Until I open my Round File that is. This spreadsheet is intended to be an open resource to all denizens of RCM and other folks who make models and prototypes. I encourage you to wander around your shop measuring all your Round Things so that all can have a way to easily make things using "Stock On Hand". Upload your .CSV version to the dropbox and I will integrate them. As you see, the premier version of the sheet has only two items. That is just a format suggestion. I expect that with your participation, we can have this up to 10,000 items in no time. This file was written in CSV format. Open it using your favorite spreadsheet program. N O T E S I wrote the original in OpenOffice Calc (.ods) I renamed the first tab (sheet) "Imperial" and the second tab (sheet) "Metric" The metric sheet can automatically convert from imperial. I suggest the following example for Excel users: =IF (Imperial.B8>0,Imperial.B8*25.4,"") And for OpenOffice users: =IF (Imperial.B8>0;Imperial.B8*25.4;"")