I am reading 'The Invisible Man' written by H.G.Wells and here I have this phrase 'saving his regard'. A man named Marvel, who was chosen by the Invisible Man(Griffin) to do things for Griffin, was sitting in a bench at Port Stowe and was approached by a mariner. After they shared sort of greetings, there is a sentence like following: The mariner produced a toothpick, and (saving his regard) was engrossed thereby for some minutes.
In this sentence, what does 'saving his regard' mean?