Beam Compass with scales and a piston clamp

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Project by George_SA posted 02-25-2020 03:45 PM 723 views 1 time favorited 3 comments Add to Favorites Watch

My wife needed a compass. The result is is this beam compass.

I downloaded a 1:1 scale (pic 3) to measure the radius and a 1:2 scale Pic (4) to measure the diameter and stuck them to the beam. My wife will seal them with modge podge against wear and tear. The max diameter circle that can be drawn is about 900mm.

I made a piston clamp for the sliding block from some rosewood blocks from the scrap bin. I tapped a hole for the screw with a dowel piston. On top of the dowel piston there is a washer to protect the dowel from the screw.
I glued an extra layer onto the sides to strenghen against the clamping action

-- Sometimes life gets in the way of one's woodworking :)

3 comments so far

View swirt's profile


6027 posts in 3984 days

#1 posted 02-26-2020 02:53 AM

Nice work. I am sure it will prove very handy.

-- Galootish log blog,

View doubleDD's profile


10159 posts in 3055 days

#2 posted 02-26-2020 03:53 PM

I agree, nice work and design on it.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

View bushmaster's profile


4122 posts in 3295 days

#3 posted 03-02-2020 07:51 PM

Nice compass

-- Brian - Hazelton, British Columbia

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