Guys I am drilling a 1/8 hole in the end of 3/4 rod but I also want it to be lets say at a dept of 1 1/16. So with this info I am in market for a dept gage so that I can drill a hole be it 1/8 or 1/2 dia to a measure depth.So looking on ebay I see there are more than a couple to chose from with all kinds of accuracy.While I am not looking for something that will split hair like .0001 but maybe .001 would be more like it.Shopping on ebay means used but price sure looks like some are new and some are used.So being a dept gage for me it won't be used all the time but just every once while.I am asking for suggestion on what to look for that I can measure the dept of maybe an 1/8 hole and larger to maybe depth max of 6"? You know the length of drill bit?Thanks guys the more I look on ebay my choices keeps changing,thought I would ask first before I hit the "Buy it Now" button.