Of approximately 4" centre height and admitting 20" between centres, the lathe featured a heavy "beading" around the edges of the bed - a distinctive feature of early Drummond - and some other contemporary lathes - and must have been designed to add some stiffness to the very elegant if rather light casting. Also of assistance in stiffening the structure was a heavy cast-iron chip tray with cut-outs at front and back to give clearance for the round-rope drive belt. The original drive would have been from a foot-operated treadle and flywheel assembly, almost certainly of the type used on the 3.5-inch flat bed. The layout of the screwcutting arrangements was identical to those on a Mk 1 B Type: a "power shaft", with a dog clutch at the headstock end, ran the length of the bed and engaged a gear at the tailstock end to transmit its drive upwards to the leadscrew that lay between the lathe bed ways.
Slide-rest feed screws (and the leadscrew) were all of square-section and arranged to be "cack-handed" i.e. e.g. turning one clockwise would cause the slide to retract rather than advance.
Able to be swung a few degrees in each direction from the centre line, the headstock carried a spindle that, like many similar lathes from competing manufacturers at the time, was left solid and fitted with a No. 1 Morse taper centre. Spindle bearings were plain and pressed into holes carried on rather slender posts; to retain and adjust them the posts were split downwards, through their lower section, with a tightening bolt that passed through from back to front - the nuts can be see against the small circular bosses underneath each bearing in the pictures above and below. This bearing design was also used on the first of the popular 3.5" flat bed "B-type" machines
If any reader has a Drummond like this (or any other unknown type)  the writer would be interested to hear from you.

A delicately constructed but rather elegantly designed headstock with a 3-step pulley originally intended to accept a round "rope" or leather-belt.
The chuck is a contemporary pattern ring-scroll 3-jaw by D.E.Whiton of New London, Connecticut, USA.

Compound slide rest with T-slotted cross slide and distinctive Drummond-pattern handwheels.
The feedscrews both lack graduated dials.

The leadscrew dog-clutch operating handle protrudes through the bed immediately below the gap. Underneath is an unnecessary bolt-on support plate - removed from the smaller "B-type" lathe in 1907.
Just visible at the front of the headstock casting is the slotted boss that allowed the headstock to be swivelled few degrees in either direction from the centre; also clearly visible, against the machined circular section, is  the nut on the end of the bolt that passed beneath the bearing to adjust it.

The tailstock and leadscrew-drive gears are almost identical in shape to the smaller machine. The tailstock barrel locking  arrangement looks to have been improved to a positive-clamping type instead of a simple screw-in bolt.

The changewheels are mounted on an L-shaped bracket - with an additional slotted bracket on the headstock to carry the stud and gear necessary to cut left-hand threads.
The screwed gear-retaining ring on the end of the spindle has been put on the wrong way round.