Rigid, well-designed trammel for layout, scribing, and measuring distances and circles. The top of the beam is flattened so that when the trams are clamped in position, they will not turn from pressure on the points.
A beam compass is a compass with a beam and sliding sockets or cursors for drawing and dividing circles larger than those made by a regular pair of compasses. The instrument can be as a whole, or made on the spot with individual sockets (called trammel points) and any suitable beam.
• Useful instrument for draftsmen.
• Tool makers and Machinists with fine adjustments for accurate layout work.
• Special sizes also available on Order.
| Item Code No. | Beam Size Inch | Beam Size mm | Scribes Size Inch | Scribes Size mm |
|---|---|---|---|---|
| ABM-EPT-7930 | 10-1/2 | 265 | 18 | 450 |
| ABM-EPT-7931 | 14-1/2 | 365 | 26 | 650 |
| ABM-EPT-7932 | 20 | 500 | 36 | 900 |
