Watt's end measuring machine
1776
Palmer's micrometer (replica)
circa 1848
Lucien Sharpe sheet metal gauge
circa 1850
Dividing engine for making sextants and octants
Made late 1700s, modified 1800s
Micrometer type mechanical comparator
1855
Maudslay 's Lord Chancellor bench micrometer
1805
Whitworth standard wire gauge
1869 to 1897
Brass micrometer type gauge comparator.
Circular Instrument Dividing Engine
1919
Pair of Carl Zeiss dial type measuring gauges
Set of Johansson gauge blocks, c 1900.
1896-1918
Slocomb digital micrometer
1920-1939
Miniature micrometer by Borletti of Milan in a small pocket
Direct digital display micrometer made by Brown and Sharpe
1922-1928
early metric micrometer
1878
Girth tape
American Standard Wire Gauge
circa 1858
Micrometer in wooden case
1913-1929
Automatic micrometer
1850-1900
Pneumatic 'Go No Go' gauging machine
1955-1965
Pocket sheet metal gauge
1878-1867 (design)
Early dividing engine (incomplete)
Collimator for measuring flatness of surfaces
1940
One resolution extender type K02
1973
Sample thread gauge
circa 1917-1919
Accessories for a horizontal optical comparator
Accessories for a horizontal optical comparator
Case and accessories for horizontal optical comparator
Accessories for a horizontal optical comparator
digital L.C.D. micrometer
circa 1981
One linear interferometer assembly Ident.10703A
1973
One remote interferometer assembly
1973
Component, horizontal optical comparator
Three gauges, tool for securing interchangeability in photographic lenses and two samples of same.
1892
Differential Screw Micrometer and case
1801-1811
Circular instrument dividing engine
1778
Girth tape
bench micrometer
1881
Right-angle gauge, incorporating spirit level
frame micrometer
1826-1894
Pair of Vee supports for Whitworth measuring machine (M.1671)
"0-2" Bench Micrometer
1944
Screw pitch caliper with a Boxford dial gauge
1942
digital readout micrometer
pat 1893.
Combined Vernier callipers and depth gauge
1842-1846
internal and external gauges
1835-1865
Ship's plate thickness measuring gauge with vernier scale.
not known
Wire diameter gauge
Not known
Eccentric wire-gauge
Vernier caliper for workshop use
circa 1830