Now a long-forgotten make, the lightly-built Grigg was manufactured by the Grigg Motor and Engineering Company Ltd. Of Twickenham, Middlesex, England. With its leadscrew running down the centre line of the bed and a single swivelling tool slide - both along the lines of an early Drummond 31/2" flat bed - it appears to have been designed during the closing years of the 19th century and manufactured during the first decade of the 20th. Intended for both bench mounting and fitted to a self-contained treadle and flywheel stand with cast-iron chip tray, the Gigg was of almost miniature proportions and only 24-inches long with a centre height of around 3 inches and a capacity between centres of 12 inches. A gap in the bed was provided and power sliding was by changewheels, though with no backgear fitted to reduce the spindle speed trying to use them for thread cutting would have been difficult. 
The headstock, with plain bronze bearings supported on the slenderest of posts, was located on the flat-topped, 60-degree dovetailed-edged bed by a central tennon and retained in place by a single bolt though its centre. The drive pulley, replaced in the pictures below by a modern V-type, would originally have been of the type that mounted a 3-step, round leather "gut" drive. Unusually, the section of bed beneath the headstock was longer than necessary, possibly to allow the changewheel bracket to be swung out of the way and the headstock (or  "loose head" as it would have been known at the time) slid back to obtain a little more distance between centres.
The saddle, of considerable length for such a small machine, carried two traverse T slots - allowing it be used as small boring table - but the very wide and somewhat cumbersome tool slide, bereft of a micrometer dial, reflected a contemporary weakness, it was carried on a bar that fitted into a boss cast on the front edge of the saddle. Denied proper support it would thus have been the root cause of the tool chatter inevitable (on other than light cuts) with this design.
Besides its slender construction the tailstock too had an unfortunate drawback, its front edge was vertical and, when drawn up against the face of the saddle, its No. 1 Morse taper barrel would have had insufficient reach to contact the headstock centre. The barrel was inefficiently locked, like so many on cheaper lathes, by a long slot in the casting nipped up by a pinch bolt.
Despite the inadequacies evident in the design (all contemporary weaknesses that took over three decades to gradually eliminate from small lathes) the Grigg exhibited good detailing and thoughtful touches with decently-large changewheel mounting studs (and easy-to-grip knurled retaining nuts), pin-hole locking rings to set the headstock spindle end float, good-sized handwheels on the leadscrew and tailstock and a large, flat-topped tool slide that would have allowed the owner the chance to adapt it for any number of ingenious purposes.