9 Weighing apparatus and instruments, namely, weighing scales; separation columns for weighing purposes; electrical weighing apparatus in the nature of scales; scales; precision balances; electrical scales; weights for use with weighing scales; weighbridges; weighing machines; filling level detectors; measuring apparatus and instruments, namely, bevels; precision measuring apparatus, namely, bevels; digital measuring apparatus, namely, digital level gauges; dosimeters; liquid dosage devices that measure the amounts to be dispensed; scientific, nautical, surveying, photographic, cinematographic, optical, measuring, signaling, checking in the nature of supervision and life-saving apparatus and instruments, namely, life-buoys; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electric currency converters