High-S/N integrated pulse profiles of the 14 pulsars in NGC 1851, each obtained summing the brightest detections available in the MeerKAT UHF band. Bottom panels: total intensity (black line) and, for the pulsars where some significant polarization was measurable, linear (red line) and circular (blue line) polarization profiles. Top panels: position angle (PA) of the linear polarization, showing measurements that are at least 3-σ significant. We follow the PSR/IEEE convention (van Straten et al. 2010), where the left-hand circular polarization is positive and the PA angle increases counterclockwise on the sky. The horizontal section of the short bars on the bottom-right of each panel shows the effective time resolution, which accounts for the sampling time (9.41 μs) and the intra-channel smearing; in all cases it is < 14 μs.