Acid hydrometers; Alarms for the detection of inflammable gases; Anemometers; Gas testing instruments; Laser rangefinders; Length measuring gauges; Measuring apparatus for temperature and humidity levels in gases and solid substances; Metal detectors; Metal detectors for industrial or military purposes; Optical inspection apparatus; pH meters; Pipettes; Scanners; Stands adapted for mobile phones; Stands adapted for tablet computers; Surveying instruments; Tire pressure gauges; Tool measuring ...