A question for the older guys

[NP99]

Have you guys ever worked with trammels? Geometry was never my thing :)


http://www.ebay.com.au/itm/VINTAGE-BRASS-STEEL-TRAMMEL-ENDS-/181211364874?pt=UK_Hand_Tools_Equipment&hash=item2a3109fe0a&_uhb=1

[Trolatron]

Haha yeah , not saying I am old but I have and still do occasionally use them. I'm not even old enough to use Inches.

[NissanGQ4.2]

Are they used for stabbing people???

I must be young *L*

[my third 256]

usually has a piece of wood you slide them on and measure point to point a bit like verniers

[mudnut]

Nah, I use the Mr Bean method.

[taslucas]

this pic may help


http://www.nissanpatrol.com.au/forums/images/imported/2013/10/141.jpg

[taslucas]

from wiki:

Trammels or trammel points are the sockets or cursors that, together with the beam, make up a beam compass. Their relatively small size makes them easy to store or transport. They consist of two separate metal pieces (approx. 2.5" × 5" × 1/2") that are usually connected by a piece of wood, The wood timber is not included in the purchase of the trammel points. It can be ripped on a table saw. A lumber yard or woodworking store should have a piece readily available to fit the opening also, metal, or pipe. They work like a scratch awl.
Use


The beam compass is used to scribe a circle. The radius can be adjusted by sliding the metal across the wood (beam) and locking it by turning a knob at the desired location. The threaded machine rod is similar to the bolt. The only limitation is the rigidity of the wood being used. Longer pieces tend to get floppier depending on the species of wood used. Metal can be used as an alternative but also has length limitations. Trammel points score a precise cut out line with the sharp point of the rod. When the circular knob is turned, it micro adjusts the radius of the circle. The spring locks the mechanism at the precise desired location. Turning clockwise decreases the radius while turning counterclockwise increases the radius slightly.

[PMC]

Have you guys ever worked with trammels? Geometry was never my thing :)


http://www.ebay.com.au/itm/VINTAGE-BRASS-STEEL-TRAMMEL-ENDS-/181211364874?pt=UK_Hand_Tools_Equipment&hash=item2a3109fe0a&_uhb=1

G'day NP99,

Way before my time, i would have to look those up in the history books section in the National Library . lol

PS, did you use those things in your early days, in your army career?lol

Regards,

RLI

[jack]

Direct from the Bronze Age

[taslucas]

You can still buy them new

[NP99]

G'day NP99,

Way before my time, i would have to look those up in the history books section in the National Library . lol

PS, did you use those things in your early days, in your army career?lol

Regards,

RLI

When we built the pyramids ....... :)

[megatexture]

Never used them myself but this link describes them well and has and has two animations how they can work to make an eclipse, handy to know even though ill possibly never need to do it lmao

http://en.wikipedia.org/wiki/Trammel_of_Archimedes

[NP99]

Never used them myself but this link describes them well and has and has two animations how they can work to make an eclipse, handy to know even though ill possibly never need to do it lmao

http://en.wikipedia.org/wiki/Trammel_of_Archimedes

Never say never mate :)