A device for measuring the circumference of an object, in particular of a body limb, comprising: - a flexible longitudinal element, graduated or not, having a first longitudinal direction, arranged to be affixed along said object, in particular along said body limb, said flexible longitudinal element being connected to a detachable or not detachable distal strap (S D) and/or to a detachable or not detachable proximal strap (S P), each inscribed in a plane substantially perpendicular to said longitudinal direction, said flexible longitudinal element comprising different connection zones (2, 2', 2",...) and - a measuring system comprising a connection member to ensure a connection of said measuring system to at least one of the different connection zones (2, 2', 2",...) of said flexible longitudinal element, said measuring system being in the form of a reel of a flexible measuring element, graded or not, arranged to be affixed and to form a loop around said object, in particular around said body limb, when said measuring element is in the measuring position, said measuring system comprising: - at least one wall and an exit port arranged to allow an exit of at least one unwound portion of said measuring element, said at least one unwound portion of said measuring element being defined between said exit port and a distal end of said measuring element, said distal end of said measuring element being provided with a connecting element, and - means for connecting said connecting element of said distal end of said measuring element, said connection member, allowing to ensure a connection of said measuring system in the form of a reel to at least one of the different connection zones (2, 2', 2",...) of said flexible longitudinal element, said measuring device being characterized in that said different connection zones (2, 2', 2",...) of said flexible longitudinal element are fixed zones of connection, and in that said connection member is located on a wall of said measuring system between said exit port and said connection means of said connecting element of said distal end of said measuring element. - a flexible longitudinal element, graduated or not, having a first longitudinal direction, arranged to be affixed along said object, in particular along said body limb, said flexible longitudinal element being connected to a detachable or not detachable distal strap (S D) and/or to a detachable or not detachable proximal strap (S P), each inscribed in a plane substantially perpendicular to said longitudinal direction, said flexible longitudinal element comprising different connection zones (2, 2', 2",...) and - a measuring system comprising a connection member to ensure a connection of said measuring system to at least one of the different connection zones (2, 2', 2",...) of said flexible longitudinal element, said measuring system being in the form of a reel of a flexible measuring element, graded or not, arranged to be affixed and to form a loop around said object, in particular around said body limb, when said measuring element is in the measuring position, said measuring system comprising: - at least one wall and an exit port arranged to allow an exit of at least one unwound portion of said measuring element, said at least one unwound portion of said measuring element being defined between said exit port and a distal end of said measuring element, said distal end of said measuring element being provided with a connecting element, and - means for connecting said connecting element of said distal end of said measuring element, - at least one wall and an exit port arranged to allow an exit of at least one unwound portion of said measuring element, said at least one unwound portion of said measuring element being defined between said exit port and a distal end of said measuring element, said distal end of said measuring element being provided with a connecting element, and - means for connecting said connecting element of said distal end of said measuring element, said connection member, allowing to ensure a connection of said measuring system in the form of a reel to at least one of the different connection zones (2, 2', 2",...) of said flexible longitudinal element, said measuring device being characterized in that said different connection zones (2, 2', 2",...) of said flexible longitudinal element are fixed zones of connection, and in that said connection member is located on a wall of said measuring system between said exit port and said connection means of said connecting element of said distal end of said measuring element.