Manometer Accessory Kit, Includes (2) No. A-303 Static Pressure Tips With Magnetic Mounting, (2) 3/16 in I.D. Rubber Tubing, (1) 9 Volt Battery, (1) No. A-397 Step Drill for 3/16 in - 1/2 in Holes in 1/16 in Increments, (1) No. A-532 AV Slide Chart, (1) Pitot Tube, Polyethylene Case.N17, For Use With 475-1-FM, 475-2-FM, 475-3-FM, 477-1-FM, 477-2-FM, 477-3-FM, Compatible Brand and Series Dwyer 475-FM