Measurement and quantity records
Preserve source observations while deriving exact quantities and dimensions.
Map decimal gram or kilogram text to whole milligrams
Retain the original measurement while enforcing a declared decimal limit.
Expand a kit definition into component quantities
Multiply declared components while retaining the per-kit basis.
Reduce ratio text while preserving its source form
Create a canonical numerator and denominator with an explicit zero rule.
Map labelled axes to length, width and height
Use axis identity rather than array order for dimensions.
Derive net mass without discarding gross and tare
Reject contradictory measurements instead of clipping a negative result.