Digital - Very accurate; beeps when reading is ready.  Safe, no glass and has auto shut off.

Heavy Duty - F and C scales with handy ring top for attaching a string.

Dexco IV sets feature pure gum rubber funnel with air vent which fit any standard 500 ml bottle.  It comes complete with 16 guage x 1 1/2" stainless needle and gum rubber tubing.