From the Anvil Octagonal Door Knob Set 33228 Beeswax
BACK PLATE/ROSE 70mm
Solid Cast door knob sets. Loose roses so you can discard one and use on a rim lock or a mortice fitting with 2 roses.
Threaded spindles for adjustment
Complete with screws.
Recommend that centre of knob is 3 inches away from edge of door. Use a 4 or 5 inch latch which will prevent scraping your knuckles.