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2. Levelling - Wikipedia

   en.wikipedia.org/wiki/Levelling

   Turning is a term used when referring to moving the level to take an elevation shot from a different location. To "turn" the level, one must first take a reading and record the elevation of the point the rod is located on. While the rod is being kept in exactly the same location, the level is moved to a new location where the rod is still visible.

3. Level (optical instrument) - Wikipedia

   en.wikipedia.org/wiki/Level_(optical_instrument)

   The Y level or wye level is the oldest and bulkiest of the older style optical instruments. A low-powered telescope is placed in a pair of clamp mounts, and the instrument then leveled using a spirit level, which is mounted parallel to the main telescope. The term dumpy level (also builder's level) endures despite the evolution in design. They ...

4. Topographic Abney level - Wikipedia

   en.wikipedia.org/wiki/Topographic_Abney_Level

   In 1914 and 1915, the Forestry Quarterly published a series of articles on the use of the Abney level. [6] [7] [8] These tutorial articles remain useful today, but the primary reference for usage is the 1927 Abney Level Handbook. [3] The Abney level is typically used at the eye height of the surveyor, either hand-held or mounted on a staff at ...

5. Today's Wordle Hint, Answer for #1251 on Thursday, November ...

   www.aol.com/lifestyle/todays-wordle-hint-answer...

   800-290-4726 more ways to reach us. Sign in. Mail. ... November 21, 2024 at 12:04 AM. ... The 15 best subscription gifts of 2024, no shipping required. AOL.

6. Orders of magnitude (length) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(length)

   10.16 cm = 1.016 dm – 1 hand used in measuring height of horses (4 inches) 12 cm = 1.2 dm – diameter of a compact disc (CD) (= 120 mm) 15 cm = 1.5 dm – length of a Bic pen with cap on; 22 cm = 2.2 dm – diameter of a typical association football (soccer ball) 30 cm = 3 dm – typical school-use ruler length (= 300 mm)

7. Tripod (photography) - Wikipedia

   en.wikipedia.org/wiki/Tripod_(photography)

   Per ISO 1222:2010, [1] the current tripod bolt thread standard for attaching the camera calls for a 1/4-20 UNC [2] or 3/8-16 UNC thread. [3] Most consumer cameras are fitted with 1/4-20 UNC threads. Larger, professional cameras and lenses may be fitted with 3/8-16 UNC threads, plus a removable 1/4-20 UNC adapter, allowing them to be mounted on ...

8. These fish are the best and worst for your health, say experts

   www.aol.com/fish-best-worst-health-experts...

   800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. ... "Salmon is among the best choices for healthy fish.

9. Lens mount - Wikipedia

   en.wikipedia.org/wiki/Lens_mount

   1/6" to 1" 12 mm 0.5 mm pitch Screw CCTV, PCB: Edmund Optics μ-Video Bolex Bajonet 23.22 mm 16 mm: Breech lock Cinematography effective focal distance 17.526 mm (0.69 inches) due to beam splitter behind mount flange (accepts C-mount lenses with adapter) 1/3" bayonet mount: 25 mm 1/3" (5.24 x2.94) Bayonet Video JVC professional video cameras