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2. Laser level - Wikipedia

   en.wikipedia.org/wiki/Laser_level

   The concept of a laser level has been around since at least the early 1970s, [2] the original spinning-mirror design laser plane and line level was patented by the late 1980s, [3] and the compact lens-based laser line level (as produced by many tool manufacturers today) was patented in the late 1990s.

3. Level (optical instrument) - Wikipedia

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

   This reduces the need to set the instrument base truly level, as with a dumpy level. Self-levelling instruments are the preferred instrument on building sites, construction, and during surveying due to ease of use and rapid setup time. A digital electronic level is also set level on a tripod and reads a bar-coded staff using electronic laser ...

4. Tripod head - Wikipedia

   en.wikipedia.org/wiki/Tripod_head

   Most camera equipment includes a built-in female 1/4-20 receptacle, so the majority of tripod heads utilize a male 1/4-20 screw as their head mounts. Many consumer level tripod heads use the bare head mount to attach the camera, but higher end models often include a camera mounting system that is pre-attached to the head mount.

5. Mitchell Camera - Wikipedia

   en.wikipedia.org/wiki/Mitchell_Camera

   Mitchell R35 camera - a pin-registered, hand-holdable and tripod-mountable reflex 35mm camera with multiple magazine mounting positions and an available sound blimp. Proprietary R35 lens mount. Succeeded by the R35R (industry-standard BNCR mount) and the R35RC (BNCR mount and crystal-controlled motor). Mitchell NCR/BNCR camera - Reflex version ...

6. Tripod (photography) - Wikipedia

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

   Historically, The Royal Photographic Society recommended the thread standard for attaching older cameras to tripods was 3/16-24 BSW (3/16 inch nominal diameter, 24 threads per inch), or 1/4-20 BSW [4] for smaller cameras and 3/8-16 BSW [5] for larger cameras and pan/tilt heads. In this application, the BSW and UNC thread profiles are similar ...

7. Tribrach (instrument) - Wikipedia

   en.wikipedia.org/wiki/Tribrach_(instrument)

   The device consists of two triangular metal plates connected at their corners by leveling thumbscrews, a bubble level, a locking mechanism and often an optical plummet. The centre of the bottom plate of the tribrach has a 5/8-11 UNC thread bolt hole which is used to attach the tribrach to the tripod. The top plate has three small holes or slots ...