Pinch rods

[Philip Davies]

Pinch rods are used frequently by carpenters and joiners to check diagonals. I have a range of these at work, with sliding clamps.
The good thing about using rods is that learning disabled chaps, who cannot read rulers, can easily take very accurate transferable measurements.
Thanks to mklotz whose recent post about “rattling calipers” prompted me to post this.

[mklotz]

Yes, indeed. A tool of that design would be the perfect adjustable-length "stick" to use as a rattler in a bore.

[Moby Duck]

The Royal Navy, (and others), use similar sticks to these, about 5 ft long, to measure lengths for cutting timber shores for damage control.
They are called "Gunter Battens".

I agree that versions of these would make great "rattlers" for bore measurements, however if they were rounded/pointed they would also make actual measures, no maths required.

[DIYer]

Thanks Philip Davies! We've added your Pinch Rods to our Measuring and Marking category,
as well as to your builder page: Philip Davies's Homemade Tools. Your receipt:

Pinch Rods by Philip Davies

tags: gauge