gyro north finder for tunnel construction

{"cid":"91210401","title":"Produced by Firepower Company,High Accuracy Gyro North Finder 0.5\u00b0 Accuracy with LCD Display","imgUrl":"https:\/\/img.chinax.com\/nimg\/a5\/00\/89e9ca79f4f39739536a86094f20-200x200-1.jpg","attrs":{"Price":"2000$","Brand Name":"1","Model Number":"NF103A","Minimum Order Quantity":"1","Delivery Time":"1 week","Place of Origin":"China","Payment Terms":"L\/C,D\/P,T\/T,Western Union","Supply Ability":"500\/month","Packaging Details":"Sponge + Carton","North seeking accuracy":"\u00b10.5\u00b0","Pitch accuracy":"\u00b10.1\u00b0","Roll angle accuracy":"\u00b10.1\u00b0","Tilt adaptability":"\u00b115\u00b0","Overall dimensions":"135*135*85mm","Weight":"\u22641500g","Heading angle tracking measurement accuracy":"0.5\u00b0(5min)"}}