the form of one or more batteries not shown a threaded rod 64 threadingly engages with an end of plunger 58 opposite from tangs 62 cylinder 46 has a smaller threaded opening formed generally coaxial with bore 56 which is sized to threadingly receive threaded rod 64 an adjustment knob 66 threadingly engaged with the opposite end of threaded rod 64 allows threaded rod 64 to be rotated within the threaded opening formed in cylinder 46 rotation of threaded rod 64 thus causes axial movement of plunger 58 and laser 60 relative to longitudinal axes 34 and 27 a compression spring 68 provides tension between second body portion 40 and adjustment knob 66 to hold threaded rod 64 at a desired position threaded rod 64 defines a fine axial adjustment of laser 60 relative to longitudinal axes 34 and 27 during use layout device 12 is mounted to bow 10 by placing arm 32 within mount 28 and locking arm 32 relative to riser 14 using locking knob 29 laser 60 is axially adjusted along the longitudinal axis of cylindrical opening 44 relative to a desired reference point using the coarse axial adjustment defined by the ball and detent arrangement 48 54 and the fine axial adjustment defined by threaded rod 64 for example laser 60 may be aligned relative to arrow rest 22 and arrow 24 laser 60 is then rotated about rotation axis 70 of cylinder 46 in a 360 u00b0 arc to ensure.