Well I would have expected a register from 1692 to have been parchment. All the early one's I've seen have been. I don't know if they all were but they were supposed to be parchment :
"In 1598, Queen Elizabeth I approved an order which stipulated that every church had to:
- use registers made of parchment
- copy any old, surviving records into the parchment registers
- copy the year's baptism, marriage and burial entries and send them to the relevant bishop annually for safekeeping; these became known as Bishops' Transcripts.
Queen Elizabeth was particularly concerned that records dating from the beginning of her reign be preserved, which is why so many parish registers date from 1558. "
I know the later ones, when they gradually introduced printed forms for marriage after Hardwicke's Marriage Act and the ones for baptisms after 1812 were paper, but early ones were on parchment, which is why so many have lasted - as were legal documents.
Carole