BIRTHweigh Scale

The BIRTHweigh III scale developed by PATH allows a non-literate community health worker or birth attendant to weigh a newborn using a simple handheld method.  The design of this sling-based scale uses color  to demarcate low birthweight (LBW) from normal (<2000 g, 2000–2499 g, and >=2500 g), a critical factor in ensuring survival and proper treatment of newborns.  In addition to color, the scale uses 3  tactile system for low-light situations.   Path notes that each level of birthweigh corresponds to a specific dose of gentamicin for bacterial infection.
 

A study in Nepal confirmed that the Birthweigh III performed well compared to the gold standard of a digital scale. 
UNICEF sells a version of the scale called the Bebeway, and Path is seeking a manufacturer to produce the scale in the countries where it is needed most.