Made to complement the TrackToolz spacing gauges, and used with the Trammel Point, this piece turns a yardstick into a beam compass.
Notches make it easy to set the position exactly, and a rubber band is all that's needed to both secure the holder on the beam and keep the pencil, pen, or even a Sharpie marker in place. A carpenter's beam compass doesn't like to play nice with so many different pens, pencils, markers, or even hobby knives - this solves the problem of what to use on the multitude of different materials and surfaces we work with in model railroading, from Homasote to sheet styrene to plywood to foam.
Links to everything in the TrackToolz collection are below:
Tool Sets:
Z Gauge TrackToolz
N Gauge TrackToolz
HO Gauge TrackToolz
S Gauge TrackToolz
Individual Tools
Z Track Gauge
N Track Gauge
HO Track Gauge
S Track Gauge
Trammel Point
Pen/Pencil Holder
End Block
Track Spacers (33mm - TTrak) 2-2 track, 1-3 track, 1-4 track
Track Spacers (1.5" inch - NTrak and others) 2-2 track, 1-3 track, 1-4 track