Hi Charley,
I have used an Easyscribe more than most people as I am the man who developed the Easyscribe, so maybe I am a bit biased in my opinion. I like most of the other guys have used all sorts to scribe with in my thirty years as a carpenter from griping a pencil between my finger and thumb using a compass, cutting small bits of wood to give the correct gap. But that all told me there should be a tool for this, just like men used to hammer things with rocks the claw hammer came along and the rocks where forgot about.
I made a small tool with a flat blade and found it to be a great help. It was after I fell of and broke my neck building my own house and fearing I would not be able to work as a carpenter again, I decided to develop that little tool I had. The tool was originally designed to mark a door to fit into a frame in one fitting and when I was in my prime I could hang 13 hollow panel doors with the latches and handles on. I spent a lot of time designing the Easyscribe making it one hand adjustable and operable with a thin pencil lead that is 2mm wide for strength and durability, the tool comes with 4 leads. They are easy to order on line and more and more shops are stocking the tool with Trend as the main distributor in the UK. A blade that moves in and out so the tool can be used for back set lines and slip into gaps between materials. It is slim and fits in the leg pockets of work trousers so is always on hand. The tool is manufactured in the UK so maybe not as cheep as something out of China but still great value for money. I have been delighted with the reviews from carpenters who have bought the tool on eBay.
Cheers,
Brendan