If you were closer I would offer my gauges for your use. There is good news though. You can go to any refrigeration supply house and buy a set of gauges and hoses cheaply. The same manifold and hoses are used on home R22 systems and are much less expensive than an r134 set.
I also would expect this to be a common flea market item. Find the manifold set, then buy new hoses at the refrigeration supply house. I blew one of my 25 year old Yellow Jacket brand hoses and went to the local supply for replacements. They now have over double the burst pressure and about 66% higher working pressure. Same brand as 25 years ago. Worth the money.
Best of luck,