The Marsden M-320 is a best-selling Class III Approved 2-in-1 portable baby and toddler scale combining lightweight ABS construction, 100-hour battery life from standard AA batteries and a slide-off tray design that converts from infant to toddler weighing mode without tools. With a 20kg model for infant and early toddler use and a 50kg model extending coverage to older children, the M-320 is one of the most widely specified portable baby scales among NHS community health visitors and GP practices, providing dual-age clinical capability in a package light enough for daily community transport.
At 2.56kg with the 20kg variant, the M-320 is significantly lighter than most 2-in-1 scales with equivalent capacity and Class III certification, making it the practical choice for community practitioners who carry their scale as part of a full community nursing bag.
| Specification | Detail |
|---|---|
| Capacity Options | 20kg or 50kg |
| Graduations | 10g (20kg model); 20g below 20kg, 50g above (50kg model) |
| Approval | Class III Approved (NAWI Directive) |
| Dimensions | 560 x 308 x 140mm |
| Scale Weight | 2.56kg (20kg model), 2.69kg (50kg model) |
| Battery Life | 100 hours (4 x AA batteries) |
| Construction | ABS with curved baby tray |
| Key Functions | Hold, Tare, auto power-off |
| Warranty | 8 years |
Class III approval under the NAWI Directive confirms the M-320 is authorised for infant and toddler clinical monitoring in NHS and regulated settings. The 10g graduation of the 20kg model meets the accuracy standard required for NICE Postnatal Care guideline (NG194) community health visitor monitoring of term infants, where 10g precision is appropriate for growth trajectory assessment beyond the neonatal period. The Tare function supports weighted breastfeeding assessments recommended in NICE breastfeeding guidance. The 50kg model variant provides clinical coverage for older children in GP surgery settings where a single scale must serve the full paediatric age range up to early adolescence without exceeding budget for a specialist paediatric floor scale.
Which M-320 capacity variant should be specified for a community health visitor role?
The 20kg model is the standard community health visitor specification: the NHS health visitor caseload primarily covers children from birth to five years, and the 20kg capacity covers the weight range of most children in this age group. The 50kg model is more appropriate for GP surgery or school health settings where older children and adolescents up to approximately 12 years are weighed routinely. The 20kg model is also 0.13kg lighter than the 50kg variant, which is relevant for community practitioners managing total bag weight across a full working day of home visits.
How does the M-320 compare with the M-300 and M-400 for community baby weighing?
The M-300 offers superior precision at 2g below 6kg, making it the better choice for neonatal units and practitioners frequently weighing premature or very low birthweight infants. The M-320 at 10g graduation is appropriate for well term infants in community health visitor practice. The M-400 adds Class III and MDD dual approval, which some NHS trust procurement specifications require, and the M-400-80D adds an integrated digital height rod. The M-320 is typically the most cost-effective Class III 2-in-1 portable option where MDD certification and height measurement are not mandatory requirements for the specific clinical role.
Part of our Class III approved Medical Scales and Measuring range. Professional baby and paediatric scales provide precise infant weighing for clinical and home care settings.