Adjustable external limit gauge 3 1/2" to 4" adjustable external limit gauge. Measurements: 20 x 18 x 9 cm Materials: steel (metal) Object Number: 1907-43/1 Pt1 type: gauges Image © The Board of Trustees of the Science Museum
Setting bar 4" nominal size for setting the adjustable gauge. setting gauge Setting bar 4" nominal size for setting the adjustable gauge. Measurements: 12 x 3 x .5 cm Materials: steel (metal) Object Number: 1907-43/1 Pt2 type: gauges
setting gauge Newall 4"class F, force fit setting bar for adjustable gauge. Measurements: 10 x .9 x .5 cm Materials: steel (metal) Object Number: 1907-43/1 Pt3 type: gauges Image © The Board of Trustees of the Science Museum
setting tool Setting tool for use with the setting dial and nominal size setting barl. Measurements: 10 x 3 cm Materials: steel (metal) Object Number: 1907-43/1 Pt4 type: gauges Image © The Board of Trustees of the Science Museum
setting dial A pair of Newall setting dials for fine setting of the adjustable gauge. Measurements: 2.5 cm Materials: steel (metal) Object Number: 1907-43/1 Pt5 type: gauges Image © The Board of Trustees of the Science Museum
M.S. Letter from John Barton to Matthew Boulton, 5 September 1806. (Describes Barton's Atometer, with drawing. With 2 loose papers of calculations referring to Atometer. In brown envelope inscribed:- "Original Letter Sir J.B. to Mr. Boulton describing Atometer") M.S. Letter from John Barton to Matthew Boulton
Pedestal with electric motor and reduction gearbox with coupling Pedestal with electric motor and reduction gearbox
Pedestal, supposed to be for outboard support of workpiece Pedestal, supposed to be for outboard support of workpiece