The present invention relates to a device, the gauge type, intended to measure the height between the top of the implant, once that - latter is screwed into the jaw of the patient and the gingival crest so as to select the pillar, which is intended to be intravissé in the implant and which is compatible with the height measured. The device according to the invention is characterized in that the body (1) is provided: - axially, with a through bore (11) adapted to enable it to slide, from top to bottom, on the rod (2); - at the base, of a shoulder (12) designed to be positioned on the ridge (31) of the gensive (3) to the vertical of the implant (4) in question; in that the rod (2) is provided with an axis (21) intended to be housed in the threaded shaft (41) of the implant (4) and a pin (22), on which slides the body (1), provided with a shoulder (23) intended to be positioned in abutment on the top of the implant (4); and in that the pin (22) comprises a plurality of markers (25,26,27,28) each of which is intended to indicate a height gingival well determined which is given by the positioning of the mark, which is located facing the top (13) of the body (1). L'invention concerne un dispositif, du type jauge, destiné à mesurer la hauteur entre le dessus de l'implant une fois celui-ci vissé dans la mâchoire du patient et la crête gingivale de manière à choisir le pilier qui est destiné à être intravissé dans l'implant et qui est compatible avec la hauteur mesurée. Le dispositif selon l'invention se caractérise en ce que le corps (1) est pourvu : - axialement, d'un alésage traversant (11) apte à permettre son coulissement, de haut en bas, sur la tige (2) ; - à la base, d'un épaulement (12) destiné à être positionné sur la crête (31) de la gensive (3) à la verticale de l'implant (4) concerné ; en ce que la tige (2) est pourvue d'un axe (21) destiné à se loger dans le puits fileté (41) de l'implant (4) et d'un axe (22), sur leq