When reassembling your engine, you'll need a variety of plastigauges to measure bearing clearances. This popular assortment includes one blue strip for .004-.009 in. clearances, two red strips for .002-.006 in. clearances, and two green strips for .001-.003 in. clearances. Each strip is 12 in. long.
I used this when building an engine last year, it isnt as precise as i would like (compared to measuring with a micrometer and dial bore gauge or t gauge) but it works if you dont shell out the money for the expensive precision tools.
Kamin reviewed Mopar Plastigauge assortment part # dcc-4286819-tl