Nearly 22,000 ratings and a 4.6-star average say this isn't a gimmick — it's the piece your toolbox has been quietly missing. More than 21,500 ratings average 4.6 stars, so this is less novelty gadget and more legitimately useful backup plan. Nearly 16,000 ratings average 4.4 stars — solid company for a tool that costs less than re-spackling all your test holes. Over 5,800 Amazon ratings average out to 4.4 stars, solid company for a first real tool purchase. Early ratings average 4.6 stars, with one honest note — the beam favors close-up work over long-range spotting.