South West Healthcare
Gestation Calculator, Down Bros & Mayer & Phelps ltd, Medical equipment, 20th Century
... Pregnancy calender...-road Pregnancy calender Gestational calculator "GESTATIONAL ...
Plastic disc with moving inner wheel"GESTATIONAL CALCULATOR"
"DOWN BROS and MAYER & PHELPS LTD"
"GESTATION PERIOD IN WEEKS"
on reverse side; "NESTLE LACTOGEN"pregnancy calender, gestational calculator
