Starrett Steel Beam Trammels
- Rigid, well-designed
- 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
- The 3″ (75mm) points may be adjusted for length in the spring chucks and can be easily replaced with caliper legs or other attachments listed
- The ball points with 3″ (75mm) holder permit working from holes up to 1-1/2″ (38mm) in diameter
- A pair of 3″ (75mm) caliper points is included with each trammel
- One tram has a fine-adjusting screw for the points
- Held in place by spring friction, which prevents them from sliding when the nuts are loosened for setting
- Each tram has a knurled swivel grip at the top that turns freely, making it very convenient to swing the tool when scribing circles
| Part No. | Beam Size | Scribe Circle Diameter |
| 251A | 10-1/2" | 18" |
| C251AZZ | Case Only | |
| C251B | 14-1/2" | 26" |
| C251BZZ | Case Only | |
| C251C | 20" | 36" |
| C251CZZ | Case Only | |
| Attachments | | |
| Part No. | Description | |
| C251D | Coupling with extra 20" Beam (when used with no. C251C will scribe circle 72" in diameter) | |
| C251E | Ball points and holder | |
| 251F | Extra caliper points (2) | |
| C251H | Steel point and socket (1) has .076" hole diameter to hold leads | |
| 251J | Needle Point (1) | |
| C251K | Pen attachment (1) | |
- Contact Heavy Maintenance Supply 205-384-5284 for more information
