Looking buy a pair of blue triple etched cylinders for a service station equipment double pump. I think they're 26 by 12 1/2" if memory serves me right. Thanks Ted

I think that they are 12 3/4 x 26. The people who sell new repros can get them tinted and etched but now the 12 3/4 diameter. You can get them at the size you listed though and double or triple gasket. Some american Cylinders for them were a half in shorter, trust me I found out the hard way.