A D.S.G. 18-inch by 240-inch lathe fitted with a Burgsmuller L.4 thread-whirling head. The unit was used to cut accurate leadscrews and other acme threaded parts
Close-up of the Burgsmuller type L.4 thread-whirling head
Machining a headstock spindle on a D.S.G. lathe equipped with a hydraulic copying unit
Leadscrew correcting lathe. This was built by Dean, Smith & Grace and hosed in its own temperature-controlled room. The lathe is shown being checked with a national Physical lavatory certified master screw--a probe on the tool slide being connected to the Taylor Hobson recording equipment
Single-spindle bar auto lathe by Butterworth - used mainly for manufacturing cams for the spindle noses
A Dean, Smith & Grace surfacing and boring lathe in action
Taylor Hobson Talysurf equipment - used to measure surface texture
A section of the Standards Laboratory
Klingeinberg involute and helix tester
Taylor Hobson Talyrond equipment--used for the very precise measurement of roundness
Vibration testing in the Experimental Department
Main bay of the foundry
Small Castings Section
A pattern maker preparing a laminated plastic pattern for a D.S.G. Type 13 headstock cover
Preparation of the mould for a D.S.G. Type 25-inch by 240-inch lathe bed casting. 25 feet long, the casting weighed 4.25 tons