Quartz fiber dosimeter

"Pocket dosimeter" redirects here. For a general discussion of radiation dosimeters, see dosimeter.
Quartz fiber radiation dosimeter, showing clip for securing it to clothing; normally a breast pocket.
Display of quartz fiber dosimeter, in units of roentgen. Viewing is by holding the instrument towards an external light source and looking through the magnifying eyepiece.[1]

A quartz fiber dosimeter, sometimes called a self indicating pocket dosimeter (SIPD) or self reading pocket dosimeter (SRPD) or quartz fibre electrometer (QFE), is a type of radiation dosimeter, a pen-like device that measures the cumulative dose of ionizing radiation received by the device, usually over one work period. It is clipped to a person's clothing, normally a breast pocket for whole body exposure, to measure the user's exposure to radiation.

It is now being superseded by more modern dosimeter types such as the electronic personal dosimeter (EPD).

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