Tool for bone implant

A tool for a bone implant, comprising:

• a rod including a coupling portion having a through-hole, wherein the rod further includes a measuring arm connected to the coupling portion and a force applying arm connected to the coupling portion, wherein the measuring arm includes a first extension section having a first indicator portion, wherein the force applying arm includes a second extension section having a second indicator portion, and wherein the force applying arm is elastically deformable away from the measuring arm to displace the second extension section relative to the first extension section;
• and
• an adaptor including an outer ring and an inner ring, wherein each of two open ends at upper and lower sides of the outer ring has an annular ledge, wherein the inner ring is elastically deformable relative to the outer ring to permit the inner ring to be disposed between the annular ledges, wherein the outer ring is coupled in the through-hole of the rod, wherein the outer ring includes an outer periphery having a plurality of first toothed structures, wherein an inner periphery of the through-hole of the rod does not match with the plurality of first toothed structures to reduce a contact area between the outer periphery of the outer ring and the inner periphery of the through-hole, wherein the inner ring includes an inner periphery having a plurality of second toothed structures, and wherein the outer ring is rotatable relative to the inner ring in a single direction.