P-152 Reproducer Arm Adjusting Screw. One photo points to the screw. It is used to fine-adjust the stylus tracking on the cylinder record grooves. This is a NEW item: only one made for this occasion. A photo shows an Edison Early Standard RECORDER, but neither the Recorder nor the Carriage are included in this sale. The adjusting screw can be used with either a recorder or a reproducer that have the adjusting arm.