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3. FEATURES OF B2
0
/B2
1
The B2
0
/B2
1
is equipped with a fast-action, magnetically-
damped, automatic compensator. After the instrument has
been approximately leveled using the circular level, the line of
sight is accurately leveled by the automatic compensating
mechanism.
The B20/B21 has been designed to allow stable surveying
operations regardless of environmental conditions such as
vibration and temperature changes.
The B20 has a magnification of x32 and a standard deviation
for 1 km of double run leveling of 0.7mm.
The B20/B21 has a simple horizontal circle for angle mea-
surement, and the stadia lines on the reticle can be used for
approximate distance measurement.
The B20/B21 is ideally suited for general survey work, civil
engineering and construction work.
Содержание B20
Страница 1: ...SURVEYING INSTRUMENTS B20 B21 自動レベル Automatic Level 取扱説明書 OPERATOR S MANUAL ...
Страница 2: ...This is the mark of the Japan Surveying Instruments Manufacturers Association ...
Страница 28: ... 24 10 標準品一式 格納図 図 10 1 垂球 1 ビニールカバー 1 六角棒スパナ 1 シリコーンクロス 1 調整ピン 2 レンズキャップ 1 取扱説明書 1 15 19 16 20 17 21 18 ...
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Страница 60: ...第 4 版 07 0910 2004 株式会社ソキア トプコン 4th ed 07 0910 2004 SOKKIA TOPCON LTD ...