For those not familiar with the Mamiya TLR range the Paramender lifts the camera 50mm so that the taking lens occupies the position of the veiwing lens, thereby removing the problems of parallax.
Until you can find one Zhenya you may be able to use a tripod with a wind up centre column if you mark the 50mm spacing required on the column. Not nearly so easy to use as the correct tool, but it may help until you can get one.