The lathe was of approximately 4" centre height and admitted 20" between centres. The "beading" around the edges of the bed is a distinctive feature of early Drummond lathes, and must have been designed to add some stiffness to the rather light casting. The layout of the screwcutting arrangements is identical to those on a Mk 1 B Type: a "power shaft", with a dog clutch at the headstock end, runs the length of the bed and engages a gear at the tailstock end to transmit its drive upwards to the leadscrew that lies between the lathe bed ways.
The headstock spindle, like many lathes of the time, is solid, and fitted with a No. 1 Morse taper centre; the bearings are plain, and fitted into holes carried on rather slender posts. To retain and adjust the bearings the posts are split downwards on their centre line and have a tightening bolt that passes through from back to front - the nuts that fit onto to these bolts 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
The entire headstock assembly could be swung a few degrees in each direction from the centre line.

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.