How To Measure Chain Link Size. This is an important factor of how much steel is used. This information can be found on the information stamp on the chainsaw bar, through the numbers on the chain, or through measuring your chain manually.
With your verniers first measure the 'wire size', that is the size of the wire that was bent to make into the links. If the chain uses a master link, install it on one of the chain for purposes of measuring, and measure including the master link. When measuring a length of chain to be cut, be sure to use the link past the last measurement for the cut as that link will no longer be useable.
If the chain uses a master link, install it on one of the chain for purposes of measuring, and measure including the master link.
You can also measure the internal length and width, but those are less crucial and you can measure the outside and subtract the diameter to get an approximation. This information can be found on the information stamp on the chainsaw bar, through the numbers on the chain, or through measuring your chain manually. This is an outer plate on the pin link of roller chain. To measure the chain size, if you have just the sprocket, use calipers to measure between the teeth.