how to use a navigation plotter

{"title":"Number 5 Buoy IALA Navigation Lights Green Flashing Navigation Lights","imgUrl":"https:\/\/img.chinax.com\/nimg\/e5\/19\/fa15e02c772c36092a89277ff3db-200x200-1.jpg","attrs":{"Price":"USD$59~79","Brand Name":"WelandSignal","Model Number":"NFS1803","Minimum Order Quantity":"1pc","Delivery Time":"3-7 working days","Certification":"ROHS, CE","Place of Origin":"SHAANXI, CHINA","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"20000pcs\/month","Packaging Details":"Each has one small carton and 6pcs in one big carton","Light source":"super bright LED","Color":"Red, Green, Yellow, Blue, White","Material":"Polycarbonate, Shock-resistance, anti-UV, Salt and dust self-protection","Working Mode":"Flashing, steady on","Peak intensity":"55cd","Waterproof":"IP68","Solar panel":"2W mono","Battery":"LifePO4 lithium battery","Mounting":"4pcs bolts","Warranty":"3 years","OEM":"color, flashing frequency, logo, carton design","Standard":"IALA ,IMO","Application":"tower, chimney ,tall buildings, bridge aviation obstruction lighting area"}}

{"title":"High Precision Dynamic Electroninc Digital Compass Sensor For Various Industry Using","imgUrl":"https:\/\/img.chinax.com\/nimg\/a8\/91\/007d45d92e6898f56324db3559aa-200x200-1.jpg","attrs":{"Price":"$468.00\/Units","Brand Name":"RION","Model Number":"HCM600","Minimum Order Quantity":"1 Units","Delivery Time":"7 days for sample","Certification":"CE, ISO","Place of Origin":"Guangdong, China","Payment Terms":"T\/T, Paypal","Supply Ability":"1000 pcs per month","Packaging Details":"1pcs digital compass in each inner box , 200pcs \/ctn","Heading Accuracy":"0.3\u00b0","Roll Measure Range":"\u00b1180\u00b0","Tilt Resolution":"0.1\u00b0","digital compass MTBF":"\u226540000 hours\/time","Production":"IP67","Dimension:":"L110\u00d7W19.5\u00d7H19.5mm"}}