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Determination of the kilogram standard, 1799

Determination of the kilogram standard, 1799

1799
Brass standard 4 feet, in mahogany case

Brass standard 4 feet, in mahogany case

1826
Wood standard with tapered end

Wood standard with tapered end

bronze standard of Imperial and Metric length

bronze standard of Imperial and Metric length

1869
Bronze one inch standard

Bronze one inch standard

Pre-1824
Standard condenser type 515-A

Standard condenser type 515-A

1943
Parliamentary 5ft Standard

Parliamentary 5ft Standard

1796
Wooden standard

Wooden standard

1880-1920
Wooden standard

Wooden standard

1880-1920
10 foot standard (Cape of Good Hope Survey), 1840

10 foot standard (Cape of Good Hope Survey), 1840

1840
20 foot standard by Ramsden, 1784

20 foot standard by Ramsden, 1784

1784
10 foot standard (Survey of India), c. 1830

10 foot standard (Survey of India), c. 1830

1830
Parliamentary 5ft Standard, brass, by "Troughton" 1796, in mahogany box. Bar 5ftx1 7/16" x7/16". Divided in inches and tenths and figured from 0 to 60, at division 46:- 17" 58. Engraved Troughton London 1796. "Parliamentary Standard" various divisions on back "Exch" standard of Hen VII. 1490, "Exch" standard Eliz 1588, "Yard" "Ell"

Parliamentary 5ft Standard

1796
5 ft. tubular glass line standard of 1842, prepared by Bryan Donkin, F.R.S., in wooden case. Stds. Dept. No.455

5 ft. tubular glass line standard of 1842

1842
Two standards for the saw crankshaft, from a Robinson horizontal board cutting saw. Each standard has an elevating screw and bearing

Two standards for the saw crank shaft, from a Robinson horizontal board cutting saw

Marconi frequency standard type RD 101B, c. 1963

Marconi frequency standard type RD 101B, c. 1963

1963