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This hand pump features a pressure gauge that displays pressure in centimeters and inches of mercury (Hg) where 1 cm of Hg = 10 torr. Pump displaces 725 mL of air and has a handy pressure-release valve. Includes about 20" (~50 cm) of 9-mm OD x 6-mm ID vacuum tubing for ease of use.
If for any reason you are not satisfied with this item, it is eligible for a return, exchange, refund, or credit up to 180 days from date of purchase. Restrictions may apply. Returns & Exchanges Policy.