Yes HO is older than 00
Every ho scale train I have had worked on any ho scale track.
No. There are many different scales, or gauges, of model trains. For example, an N scale train would be too small to fit on HO scale track.
0n3 .. that's O scale (1:48) running on .75 in gauge track (1:48 = 1/4" = 1ft.) ... On30 runs on HO track (meaning that HO track represents 30" track in O scale)
One can buy a Ho Scale Track at Tower Hobbies, Trainz and Model Train Stuff. This type of track is also available at A Main Hobbies and and Hobby Linc.
3/4 inches. Modeltrainpro.com
It appears that HO Scale is a term used within the world of miniature trains. HO scale refers to the size scale of these trains and many are made of brass. Therefore a brass ho scale can be used to describe model trains.
The HO scale is used for measuring when it comes to model trains. Originally there was the O scale, or O gauge. When train models went to an even smaller size they created the HO scale to measure them.
HO is a gauge (scale) for model trains. The name HO comes from the fact that it represents a reduction of half from the earlier O gauge ("Half O"), which was more popular in Europe. The ratio for HO gauge equipment is 1:87 which means that the HO tracks are 16.5mm apart, or 1/87th of a standard train track (1435mm). In Europe, an almost exactly the same scale is called OO (pronounced "Double O"), even though it is much closer to half of O scale than double it (it is actually called "Double O" because there are two O's (OO) in the scale name).
The HO scale trains use a 3.5mm to 1 real foot ratio which works out to be about 1:87:1 and is the most popular scale for model railways in the world. A train for this type of track would have 16.5mm (0.650in) tracks.
No, HO and N scale trains are not compatible.
Yes, HO track is needed to operate an HO train.
A mile in HO scale is about 60.5 Ft.