Ashton marble or slate tablets. An attractive way to display multiple gages on the wall of a boiler room. One of these was on ebay a few years ago. It weighed almost 500 pounds, being a large slab of 1" thick slate, and you had to pick it up. Here's a description from the 1914 catalog. " These tablets, like those on the following pages, are some of the most attractive designs for gages, both as to neatness of appearance and economy of space. They can be furnished in any style of marble or slate desired, and the prices include the necessary acorn nuts and gage screws. Name plates and wall bolts are always extra."