Compound slide rest
If the screwcutting arrangements disappointed, the slide rest would surely have delighted. Quickly detachable, in the manner of a Rivett 608, the unit was self-contained, with good-sized balanced ball handles, and could be adjusted laterally on top of the vertical side. It was locked in place by a long T-bolt, with a wing nut placed conveniently at the bottom of a long tube. Although unprotected against swarf and dirt the cross-slide screw was fitted with (for the time) a remarkably large micrometer dial, graduated in 0.001" intervals and locked by an outboard knurled ring that pushed the dial inwards without disturbing the setting. Even the 360?swivel top slide was equipped with a feed-screw dial of decent size - when most contemporary machines were not - and also featured a particularly large and clear set of degree markings. Simple, but surprisingly effective and adaptable, the toolholder was just a triangular clamp with a levelling screw at the apex.
Made in one piece - it could not be set over on its base to turn slight tapers - the tailstock carried a spindle bored to take the same collet as the headstock, centres being the solid-collet type. Although the lack of a sole plate for set-over might not have mattered when the lathe was new - everything being scraped into perfect alignment - in the machine's twilight years, as the base wore, having somewhere to insert shims to restore centre height alignment would have been useful. Of a type used on other precision lathes, a slit in the casting closed down by a screw, the method of locking the spindle was crude and would have been a nuisance when the parts were old and poorly fitting.
The Pearce is very rare and, should you have one, the writer would be very interested to hear from you.
*Levin, Bottum, American Watch Tool Company, B.C.Ames, Bottum, Hjorth, Potter, Pratt & Whitney, Rivett, Wade, Waltham Machine Works, Wade, Pratt & Whitney, Rivett, Cataract, Hardinge, Elgin, Remington, Sloan & Chace, W.H.Nichols and (though now very rare) Ballou & Whitcombe, , Sawyer Watch Tool Co., Engineering Appliances, Fenn-Sadler, "Cosa Corporation of New York" and UND.