The Presbyterian Cookery Book of Good and Tried Recipes was bought in 1975, the year we were married. I am not sure if it was the tartan on the cover that prompted the purchase or the fact that it was Presbyterian based or maybe even the recommendations on the back of the book?
Anyway the book has remained unused on our shelves for many years since it was last opened but I had cause to refer to it when I wanted a scone recipe without lemonade as I had no lemonade on hand for my usual recipe.
This was the recipe I used but only after much discussion with my husband about what quantity a gill was.
Fortunately there was a page at the back of the book that provided some information but my husband and I then had a discussion about the number of ounces in a pint. There is a difference in the American pint and the UK pint so not quite sure what the Australian version was. I think it depends on the jug you use, where it was made I guess.
I ended up using tablespoons and the scones turned out fine.
As an aside I love the emergency measures at the bottom of the page. Fine if you work in the Imperial system but Australian measurements are metric.
Going back to the actual benefits of this cookery book one would be influenced by the comments on the back of the book? Well worth a read.
Gippsland Granny 
Oh I just so enjoy reading old cookery books. it is good fun trying to work out measurements. the vast majority of my recipes are metric however some of my “go to” recipes are in ounces and my old fashioned scales are used.
it is good to have scales that can be either metric or imperial and you can swap between both. You are fortunate to have the old fashioned scales too.