The R2486 series have a bialkali photocathode, a 12-stage coarse mesh dynode structure, and multiple anode wires crossing one another in the X and Y directions. Output signals from each anode can be divided through external resistive chains and derived from X and Y electrodes as the position signals. This crossed-wire anode construction features high spatial resolution, high position linearity, and easy signal processing for scintillation imaging. A 5-inch diameter type R3292 is also available.