| 摘要 |
A reading pacer and reading speed indicator including a transparent tube having a viscous fluid therein and a pace-indicating member of differing density from that of the fluid, such as a steel ball, for association with the lateral edge of reading matter in order to be visible in the peripheral vision of a reader and to pace or indicate a reading rate in accordance with the slope or angle thereof with respect to the vertical. A curved section of the tube carries both indicia and an indicator member for preselecting or determining the slope of the pacer tube.
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