A rail mount for mounting a device on a rail , the mount comprising: a frame having a length along a first direction (y), a width along a second direction (x), and a height along a third direction (z); a clamp operatively connected to the frame to be slidable along the second direction (x) to clamp the mount to the rail ; an adjustment cam operatively connected to the frame to be rotatable around a first axis (a) extending along the third direction (z); and a lever cam operatively connected to the adjustment cam to be rotatable around a second axis (b) extending along the third direction (z), wherein the lever cam is configured to translate a rotary force applied thereto into a linear force applied to the clamp along the second direction (x), and wherein the adjustment cam is configured to shift the second axis (b) closer to or further from the frame along the second direction (x) when the adjustment cam is rotated around the first axis (a), and wherein - a release button is operatively connected to the adjustment cam ; wherein the adjustment cam is configured to be rotatable around the first axis (a) only when the release button is pressed in order to disengage an interlock or a frictional interface, which otherwise maintains the angular position of the adjustment cam with respect to the frame; or - the adjustment cam comprises radially arranged detents , and one or more pins or balls are arranged to engage the detents and exert a lateral force on the adjustment cam to maintain the angular position of the adjustment cam with respect to the frame . a frame having a length along a first direction (y), a width along a second direction (x), and a height along a third direction (z); a clamp operatively connected to the frame to be slidable along the second direction (x) to clamp the mount to the rail ; an adjustment cam operatively connected to the frame to be rotatable around a first axis (a) extending along the third direction (z); and a lever cam operatively connected to the adjustment cam to be rotatable around a second axis (b) extending along the third direction (z), wherein the lever cam is configured to translate a rotary force applied thereto into a linear force applied to the clamp along the second direction (x), and wherein the adjustment cam is configured to shift the second axis (b) closer to or further from the frame along the second direction (x) when the adjustment cam is rotated around the first axis (a), and wherein - a release button is operatively connected to the adjustment cam ; wherein the adjustment cam is configured to be rotatable around the first axis (a) only when the release button is pressed in order to disengage an interlock or a frictional interface, which otherwise maintains the angular position of the adjustment cam with respect to the frame; or - the adjustment cam comprises radially arranged detents , and one or more pins or balls are arranged to engage the detents and exert a lateral force on the adjustment cam to maintain the angular position of the adjustment cam with respect to the frame . - a release button is operatively connected to the adjustment cam ; wherein the adjustment cam is configured to be rotatable around the first axis (a) only when the release button is pressed in order to disengage an interlock or a frictional interface, which otherwise maintains the angular position of the adjustment cam with respect to the frame; or - the adjustment cam comprises radially arranged detents , and one or more pins or balls are arranged to engage the detents and exert a lateral force on the adjustment cam to maintain the angular position of the adjustment cam with respect to the frame . <EOS>