|
US2173316A
(en)
|
|
Indicating instrument
|
|
USD85912S
(en)
|
|
A cobpobation op dela |
|
US2127807A
(en)
|
|
Indicating instrument
|
|
US1488875A
(en)
|
|
Combination instrument
|
|
US1572884A
(en)
|
|
Stop watch and dial
|
|
US978093A
(en)
|
|
Azimuth instrument.
|
|
US765493A
(en)
|
|
Reflection-measuring instrument.
|
|
US736925A
(en)
|
|
Instrument for ascertaining direction in marching or traveling.
|
|
US1363803A
(en)
|
|
Thermometer
|
|
GB205668A
(en)
|
|
Improvements in surveying instruments
|
|
US2142516A
(en)
|
|
Navigating instrument for aircraft
|
|
US1334273A
(en)
|
|
Magnetic compass
|
|
GB191011750A
(en)
|
|
Improvements in Sighting Compasses and like Instruments.
|
|
US1339019A
(en)
|
|
Illuminated transit
|
|
Hamilton
|
|
Colligation of the Martian markings |
|
GB283346A
(en)
|
|
Improvements in scales for angle measuring instruments
|
|
GB215981A
(en)
|
|
Improvements in or relating to surveying instruments for mining purposes
|
|
GB519346A
(en)
|
|
Improvements in indicating means for indicating devices
|
|
GB135994A
(en)
|
|
Improved Azimuth Mirror Fitting for Mariners' and like Compasses.
|
|
GB147305A
(en)
|
|
An improved inclinometer for use on aircraft or other bodies
|
|
GB191502750A
(en)
|
|
An Improved Magnetic Compass.
|
|
Sargent
|
|
The small oblong red spot on Jupiter |
|
GB190902077A
(en)
|
|
Improvements in and relating to Instruments for the Determination of Angles, Distances and the like.
|
|
GB191516301A
(en)
|
|
Improvements in Sight Compasses.
|
|
GB191218721A
(en)
|
|
A Direct Reading Tacheometer.
|
