Review on Flange Wizard 89754 Universal Magnetic Tape Holder (Two Pack) by Alan Massey

Now I use this thing all the time. Marking and drawing on the table, disassembling the pipe in a pipe bender, bending the pipe, checking others' marks. Surprisingly strong and holds the tape well on flat surfaces. My only complaint is that I wish the larger magnet was a little stronger to keep spinning when checking transition points. Great product!