Mini-Wright Peak Flow Meter. The Mini-Wright is the world's most reliable Peakflow meter. In many years of clinical testing, Mini-Wright has consistently demonstrated exceptional and consistent accuracy. It is a small basic instrument for monitoring lung functions, especially in respiratory patients. The Mini-Wright Peak Flow Meter registers capacity of a patient's bladder - flow measurement. The Mini-Wright Standard Peak Flow Meter complies with the NAEP guidelines and specification no.51 of the UK Department of Health. The meter can assist in the control of asthma. The Peak Flow Meter is intended for use by a single patient and should therefore not be used by more than one person. Individually calibrated for accuracy. Built-in vàvàn-way valve. Solid housing for years of reliable results. The Low range version is designed for use in children and adults with lower flow rates. Mini wright Peak flow meter with red scale Wright standard/low range.