metersand

Metersand is a term used primarily in fictional or educational contexts to describe a calibrated granular material employed for precision metering experiments and sensor testing.

In these contexts, metersand is presented as inert silica sand with a narrowly controlled particle-size distribution to produce repeatable bulk density and flow behavior. The concept emphasizes stable volume and predictable packing, enabling comparative tests across devices such as flow meters, pressure sensors, and granulometry analyzers.

Production typically involves selecting medium-grade silica sand, sorting by sieve to a target range (for example, coarse to fine fractions around 0.2–0.6 millimeters), washing to remove fines, drying, and packaging in moisture-sealed containers. Some implementations add trace lubricants to reduce inter-granular cohesion.

Common applications include calibration of meters that rely on granular media, demonstrations of granular flow in educational settings, and laboratory modeling of sediment transport. As a fictional or illustrative material, metersand serves as a stand-in when real reference materials are impractical to use in teaching or storytelling.

See also: sand, calibration, metrology, granular material.