Abstract: Shown is a flexible scintillator, or scintillation-type level detector, in which the scintillator is made from a plurality of elongated, relatively thin layers of plastic scintillator material stacked in close proximity to one another in a slidable relationship to provide flexibility in at least two dimensions. The layers of at least one end are aligned for operable connection to a photodetector. Optionally, an anti-friction material, such as PTFE, may be placed between layers of the plastic scintillator material. Edge and outer face surfaces of the layers of the scintillator material may be covered with an inwardly facing light reflective material and/or light-excluding material.