How to Measure a Lobster
Massachusetts Saltwater Fishing
Lobsters must be measured with a special gauge to make sure that they are “keepers.”
The carapace length is measured from the rear of the eye socket to the rear of the carapace on a line parallel to the center line of the bodyshell .
All lobsters measuring less than the minimum legal carapace length, or larger than the maximum legal carapace length, must be immediately returned to the waters from which taken.
All lobsters must be measured immediately.
It shall be unlawful to possess any lobster, or part thereof, which is mutilated in a manner which makes accurate measurement impossible.
Note: A common error made by novices is to measure over the rostrum or horn located above the eye socket. Make certain that your gauge is in the extreme rear of the eye socket and below the horn.