The HD stands for High Definition, because the gauge's exclusive AngleLOCK Indexing System has a whopping 180 can't-miss angle stops in 1° increments with special stops located at 22-1/2 degrees.
Add the industry's smoothest adjustable miter bar, a telescoping IncraLOCK Cut-off Fence & Flip Shop Stop, and a stainless steel vernier scale that reads to 1/10°, and you've got a winner that will improve the quality of any project.
Six GlideLOCK expansion disks adjust both sides of the miter bar for ZERO side play, low-friction travel. The bar fits standard square-sided miter slots measuring 3/4" wide x 3/8" deep, with or without a 15/16" T-slot at the bottom. The miter bar's adjustment range accommodates actual slot widths between 0.740" and 0.765".
The telescoping IncraLOCK Miter Fence telescopes from 18" to a full 31" length and features a front T-slot for adding a wooden zero-clearance sub fence.
The Flip Shop Stop is equipped with INCRA's patented incremental positioning racks for incredible cut-length accuracy and 100% day repeatability. USA