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From the “Why didn’t I think of that?” department: this ingenious little flexible-beam compass. You set the radius just like a measuring tape, push down on the center pin, and sweep the arc with the included pencil.  Or replace the pencil with an optional blade and cut thin materials directly. 

At thirty bucks — plus $8 more for the cutter — it’s not cheap, but it sure looks convenient!

Rotape Compass [Micro-Mark]
Parts and Accessories [Rotape.com]
Street Pricing [Google Products]
Via Amazon [What’s this?]


3 Responses to The Rotape Adjustable Compass

  1. Mike Ortega says:

    Wow thats awsome, it sure puts my old string and nail to shame :-/

  2. This product is made in the USA. I have seen others out there, that have been copied by China. The thing that is bad about the china made product is that it will not hold or use the accessories. Also, very poor quality. The “ROTAPE” tape compass is made in the USA.

  3. Frank says:

    Too dainty and faint-marking for stone construction work, as in making corrugated-cardboard or luan templates or marking stone directly, such as for radiused wall caps, pavers and treads, or hearths with a radiused front edge and signs with a radiused top edge. With a 1.5 inch wide by 8 foot long strip of half-inch-thick Owens-Corning pink rigid insulation foam, one Sharpie fine-point permanent marker, and one tungsten carbide scriber I have a beam compass that can mark a radius up to 94 inches for less than $10. Add another 99 cents for a second Sharpie and I can mark both the inner and outer radii for a wall cap simultaneously. Just poke holes through the foam for the pivot and radius point(s), squeeze the Sharpie through the radius point and use the scriber for the pivot. If I’m marking wet or dark-colored stone directly I use yellow China markers instead of the Sharpies.

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