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GB844964A
(en)
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Levelling instrument with automatic compensation for small inclinations of the instrument
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US2807981A
(en)
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Sighting telescope
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US3628874A
(en)
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Compact optical sighting level with internal fine setting of the horizontality of the line of sight
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US3324758A
(en)
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Optical plumb for a transit having a telescope such that the telescope can view through a compass at a point below the transit
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SU362576A1
(enExample)
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US2757567A
(en)
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Theodolite having scale reading means
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JP2521047B2
(ja)
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測量装置
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US2995992A
(en)
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Zenith camera system
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US3059520A
(en)
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Automatic leveling apparatus
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US2774275A
(en)
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Optical instrument
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US2173142A
(en)
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Optical system for sextants and the like
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US2552893A
(en)
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Theodolite scale reading system
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US2485558A
(en)
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Sight alignment attachment for |
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US2395921A
(en)
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Horizontal reference means for sextants and the like
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US3080801A
(en)
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Zenith camera system
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US2498273A
(en)
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Transit vertical circle reading device
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SU49281A1
(ru)
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Нивелир
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SU1151817A1
(ru)
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Нивелир
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US3520621A
(en)
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Remote levelling measurement
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SU449236A1
(ru)
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Теодолит-нивелир
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SU922508A1
(ru)
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Компенсатор дл центриров с самоустанавливающейс линией визировани
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US1324519A
(en)
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power |
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US3819280A
(en)
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Optical surveying instrument
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SU74969A1
(ru)
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Магнитный теодолит
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SU394658A1
(ru)
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Нивелир с самоустанавливающейся линией визирования
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