A very desirable machine based on the knee and table of the Tom Senior "Junior" miller (though without that machine's horizontal facility and less its useful speed-reducing backgears) the "Light Vertical" had a non-power feed table of 25" x 6.5" - though later this was increased in length to 28" with the width remaining unchanged. The original 25" table had a longitudinal travel of 15" and the 28" usefully longer at 18". In both cases the cross travel remained at 5.5" and the vertical 16.25". However, these table and travel figures are not fixed and other tables, some  a little shorter and some longer, have also been found.
The great advantage of the "Light Vertical" was it's turret-miller-like capability, a horizontal bar allowing the head to be moved in and out and also tilted through 90 degrees either side of vertical. The bar was held in two housings bolted to the top of the main column - later versions being fitted with a sheet-metal cover to hide the supports and give the impression that the bar passed through the column itself. On some examples, to ease the task of rotating it, the ram has been found fitted with a convenient and easy-to-operate handwheel-driven worm & wheel mechanism.
Expensive when new, this now rare miller was superbly made and finished and used the S-Type vertical head (as employed on the lighter E-Type miller) with a Timken taper roller bearing, No. 2 Morse taper spindle. Five (later six) speeds were available from 50 to 3000 rpm, the head being fitted with both a worm-driven fine-down-feed control and a rack-and-pinion rapid-action drilling quill.
Some Light Vertical models are found with the surplus door on the column's left hand face (used on the "Junior" to access the speed change) while other have a simple sheet-metal cover in its place..