I then checked her collar, and the attachment points of the chain

I then checked her collar, and the attachment points of the chain, both at the collar and at the double loop where it was fastened about the axle.
“I am perfectly secured,” she said, angrily.
“I am sorry if chain check distresses you,” I said. “You comprehend its rationale, of course.”
“Yes,” she said, angrily.
“It is procedurally recommended by the caste of slavers,” I said.

Players of Gor, p. 214