Veritas® Beam Compass
Ordinary compasses just don't cut it in the shop; a beam compass (or trammel) is much more practical.
Using a single beam section, the Veritas® beam compass deals with circles from 1-1/2" to 24" in diameter. Additional sections take you up to 80" (203cm) for circular tables, rockers, arches, etc.
It has carbide-tipped points that readily scribe metal as well as wood, although the pencil head is usually used for scribing wood. A micro-adjust feature quickly gives accurate settings.
All of this comes in a fitted wooden case that even includes a small brass center pivot disc for use where it is important not to mar work. The beams are steel and the fittings are all solid brass.
Using a single beam section, arcs with radii ranging from 3/4" to 12" can be drawn. With all three beams joined together, this range extends to 40" (1 metre+). The set is equipped with two carbide points for scribing metal as well as wood. One end cap is cross-drilled to accept a standard pencil (included). A micro-adjust mechanism quickly gives accurate settings.
Setting the Beam Compass
Lay the compass on any flat surface and adjust the scribe points to the approximate desired distance apart. Tighten the thumbscrews on both the non-adjustable body and the micro-adjust mechanism, but leave the thumbscrew loose on the adjustable body. Adjust the desired radius to the exact length by turning the wheel on the micro-adjust mechanism, then tighten the thumbscrew on the adjustable body.
The Pencil Mount
Loosen the cross-drilled end cap and slip a pencil through the hole. Tighten the end cap until the pencil is firmly clamped. Rotate the micro-adjust mechanism and adjoining adjustable body so both are in the same plane as the pencil. Rotate the non-adjustable body out of the way, 90° with respect to the pencil, or remove completely from the beam. Set the radius as above.
The Pivot Disc
There may be times when you will not want a center point to permanently mark the surface. For this, we have provided a brass pivot disc that can be placed at the center of the arc to be drawn so that the scribe point will not pierce the work surface. The disc can be held temporarily in position with double-sided tape or hot-melt glue.
Indelible pencils leave a distinct, long-lasting mark on a moist surface (it is often helpful to wet the surface first with a spray-mist bottle). They mark with very little pressure, allowing you to concentrate on accuracy.
The drawing lead in these pencils is made of materials that can easily break. Sharpening to a sharp point is not recommended. For best results, sharpen using the larger (11mm) hole of a two-hole hand-held pencil sharpener until the pencil tip is no smaller than half the lead diameter. The secret is to shave off just enough of the outer casing to expose the lead, while keeping the end blunt.
Veritas® Beam Compass
- Brand: Veritas tools
- Product Code: 05N30.01
- Availability: In Stock
- Ex Tax: 911.05kr (SEK)