Beam Compass Sets (also known as Trammels) are Quality German made instrument sets designed for drawing large circles up to a diameter of 1200mm.
Sets Comprise of:
- Two 30cm Alloy Beams Join to Give 1200mm Diameter.
- .5mm Pencil.
- Joining Block.
- Technical Pen Attachment.
- Ruling Pen Attachment.
- Compass Point Attachment.
- 2mm Lead Attachment.
- Lead Spares Tube.
Draftex Beam Compasses are designed for drawing large circles up to a diameter of 1200mm.
The two beams are joined at the centre and each has either the point or the pencil part running along it with adjustment being made with knurled push wheels.
A variety of fittings can be attached including fineline .5mm pencil, 2mm pencil, ruling pen style ink attachment and a technical pen attachment.
Final measurements are ideally taken between the points on a long rule or tape.