medical vacuum / aspirator pump by Medical Industries America
this unit seems to be in working order. model 501 from Medical Industries America, U.S.A. 120VAC, 60HZ, 3.5A #57057. over all size about 14” long x 10” tall x 6” wide. weighs about 11 lbs. I did not clean the unit it is listed as used, but looks mostly like its new.