Pdr brings microscope. Pdr is a company which is the supplier of active and passive fiber optic components and it is a contract manufacturing company. The company is accredited nqa, qsr certification. The microscope is powered by three aaa batteries which run at least 40 hours before replacement. The microscope is provided with a universal adapter for 2.5mm connectors including st, fc and sc. Adapters. The salient features of microscope: