|
USD85912S
(en)
|
|
A cobpobation op dela |
|
US2127807A
(en)
|
|
Indicating instrument
|
|
US1488875A
(en)
|
|
Combination instrument
|
|
US1572884A
(en)
|
|
Stop watch and dial
|
|
SU605950A1
(ru)
|
|
Датчик дл измерени азимута в скважине
|
|
US736925A
(en)
|
|
Instrument for ascertaining direction in marching or traveling.
|
|
GB269718A
(en)
|
|
New form of theodolite
|
|
US1322770A
(en)
|
|
Measuring instrument.
|
|
US1064770A
(en)
|
|
Schedule-indicator.
|
|
US1363803A
(en)
|
|
Thermometer
|
|
US847058A
(en)
|
|
Optical device for use with measuring instruments.
|
|
GB205668A
(en)
|
|
Improvements in surveying instruments
|
|
US2504108A
(en)
|
|
Dual image drift meter
|
|
GB191008821A
(en)
|
|
Improvements in Azimuth Instruments.
|
|
US2142516A
(en)
|
|
Navigating instrument for aircraft
|
|
US1179242A
(en)
|
|
Protractor.
|
|
US728915A
(en)
|
|
Altitude instrument.
|
|
US1339019A
(en)
|
|
Illuminated transit
|
|
Hamilton
|
|
Colligation of the Martian markings |
|
GB283346A
(en)
|
|
Improvements in scales for angle measuring instruments
|
|
GB191011750A
(en)
|
|
Improvements in Sighting Compasses and like Instruments.
|
|
GB215981A
(en)
|
|
Improvements in or relating to surveying instruments for mining purposes
|
|
GB519346A
(en)
|
|
Improvements in indicating means for indicating devices
|
|
Gompertz
|
|
On a new Instrument called the Differential Sextant, for measuring small differences of angular distances |
|
GB135994A
(en)
|
|
Improved Azimuth Mirror Fitting for Mariners' and like Compasses.
|
