GIFT IDEA - BRAND NEW ITEM FISHING BAROMETER DIAMETER 3 1/2" TRACK BAROMETRIC PRESSURE TRENDS TO INCREASE YOUR FISHING RESULTS. THIS BAROMETER MAKES IT VERY EASY TO MEASURE  AIR - PRESSURE TRENDS TO DETERMINE THE BEST TIMES TO KEEP ON FISHING. TO USE IT CALIBRATE IT TO YOUR LOCAL BAROMETRIC PRESSURE WITH AN EASY TURN OF A SCREW, AND SEE WHERE THE NEEDLE POINTS ON THE COLOR - CODED METER. THIS SHOWS YOU WHETHER TO EXPECT GOOD, GREAT OR POOR FISHING. COMPACT DESIGN FITS EASY INTO GLOVE COMPARTMENT OR TACKLE BOX. Check out my other items. RETAIL PLASTIC PACKAGING. Visit my EBAY store