Where it fits in a carpenter kit
Johnson CS5 is a 16 by 24-inch aluminum framing square, not a combination square. Its longer legs and stamped tables support framing layout and checking larger right-angle references. Johnson lists several graduation divisions alongside rafter, brace and board-foot tables. A carpenter should read the relevant scale carefully rather than assuming every mark represents a familiar fraction of an inch or that the tables replace understanding the layout.
Configuration and alternatives
This is a sensible addition when a seven-inch square leaves the actual marking task unfinished. For short belt work, Swanson S0101 is easier to carry; neither replaces an adjustable head for repeated depth transfers. Store the longer square so the legs are not bent by other equipment, and check it against a known reference. More printed information is useful only when the carpenter can apply it to the job.
Spend on a complete working setup
For a first kit, prioritise the references actually used by the crew: a tape and suitable square before a collection of specialist marking gadgets. Add a longer level or framing square for a recurring reach problem, and a chalk reel for suitable long construction marks. A complete layout budget also includes the correct chalk or marking consumables and protection during transport.