IMPACT INSTRUMENTATION 317M, S/N 9810055 GENERAL PURPOSE, SELF-CONTINED SURGICAL SUCTION & PRESSURE APPARATUS CONSISTING OF A CONTROLE MODULE CONTAINING: VACUUM/PRESSURE PUMP, CONTROL & POWE SUPPLY CIRCUITS. A DUAL-SCALE VACUUM GAUGE W/ADJUSTABLE REGULATOR & PRESSURE PORT W/OVERLOAD PROTECTION, A DUAL COLLECTION CANISTER SYSTEM, OVERFLOW SHUF OFF VALVE & ATTACHMENT TUBING FOR A DISPOSABLE HYDROPHOBIC/BACTERIAL FILTER. OPERATION & SERVICE INSTRUCTION MANUAL INCLUDED