The unit is composed of hydraulic and double conic placing,hydraulic spading and drawing ,straightening,shearing,end stopping,coiling,feeding,dropping cart,ect.
Method of measuring surface tension of plating soln. by dropping liquid from stalagmometer is stated, which could be popularized to plating industry in this country.
Conclusion Anatomic variations of ostiomeatal com plex are common findings.Using coronal position together with naphazoline hydro chloride dropping is of first choice in CT examination.