With a scale and tripod screw, this rail slider allows for precise front-to-back and left-to-right adjustments. It is especially useful for macro photography where accurate focus is critical. The camera platform can move 10 cm forward and backward, and 10 cm side to side, enabling smooth focus stacking and small-range lens movements. The integrated scale allows for accurate distance measurement and repeatable positioning. The gimbal head is easy to use and can be mounted directly onto a standard tripod. Its stable design supports medium-sized cameras. Constructed from PPS material, the slider is lightweight yet durable. The drive mechanism uses a precision spiral gear system, ensuring smooth and stable micro-adjustments for focus stacking and macro work. Color: Black Material: PPS Plastic Size: 35 cm Package Contents: 1 x Tripod Rail Slider Head Note: Light and display differences may cause slight color variation between the image and the actual item. Measurement allows for an error of +/- 1-3 cm.