How long are springs

All right, should have asked this question here before I bid. Recently won two new carb springs -- the ones that hook onto the heat shield. Couldn't resist the picture of the shiney cad plating so I bid. The seller assured me they were the right ones for my application before I bid. The springs arrived yesterday, but look much shorter than my old crummy not so shiney ones. My question is -- how long should these springs be for the 1970/71 4 screw roundtop carbs. My old ones might not be right, but they seem like they would be from the fit. Any help I can get on the original length of these springs would be much appreciated.