Re: CAR SIDING

Knowing that the grab iron on the side of the car has defined dimension between bolt holes allows simple proportional determination of the effective width of the siding.

Quite simple: (dimension 'A'/known) = ( dimension 'B'/unknown) Optics of the scanner or other viewing device are of no consequence. This is why known 'story sticks' are often used in photographing artifacts.

The AAR drawing is a keeper, thank you for that one.





BillD Wrote:
=======================================================

>
> Another point... Rex was in error to say that you
> should scan the plans and scale them up and
> measure the length... this would magnify any
> errors in either the plans or the scanning (often
> scanning will "stretch" one axis more than the
> other). This is why you should never scale
> anything from a plan, and why good plans are
> always fully dimensioned.
>
> Bill Daniels, P.E.
> San Francisco, CA

Rex Beistle
NMRA RMR
Estes Valley Division