Cave Survey - Sighting Instruments User Guide

For more detailed information on caving techniques, caving gear, and cave projects, visit my website at: www.derekbristol.com
Caves are delicate and potentially dangerous places. For more information on wild caving, vertical caving techniques, and cave survey, visit the National Speleological Society website:
caves.org
To find a local grotto (caving club) visit:
caves.org/committee/i-o/grott...
White Nose Syndrome (WNS) is a disease that is devastating to bats. To learn more about what you can do to help, along with information on how to properly decontaminate caving gear, visit:
caves.org/WNS/index.shtml
Cave Videography Gear I Use: (Note that these are affiliate links)
Full-frame Low-Light Camera - amzn.to/2TkIUxT
In-Cave Fast Prime Lens (a7iii) - amzn.to/2TnkB27
General Purpose Zoom Lens (a7iii) - amzn.to/2Trc2Uf
Wide Angle Zoom Lens (a7iii) - amzn.to/2Duwuhl
Gimbal - amzn.to/2TKccpT
ND Filter - amzn.to/2PAvBuJ
Soft-Case for Caving (a7iii) - amzn.to/2QanKDA
Tripod - amzn.to/2PVGrvv
Camera Bag - amzn.to/2RZekYT
Helmet-Mounted Action Camera: amzn.to/2qTa0yT
Drone - amzn.to/2PRs7nU
APS-C Run and Gun Camera - amzn.to/2DKTMQU
In-Cave Prime Lens (a6500) - amzn.to/2DuyLZK
General Purpose Zoom Lens (a6500) - amzn.to/2Q5Mgpw
Wide Angle Zoom Lens (a6500) - amzn.to/2Tnl98b
Soft-Case for Caving (a6500) - amzn.to/2OPF6Be
Hard-Case for Wet Caving (a6500) - amzn.to/2DxFOki

[@bmwcaves]

Excellent as always Derek !

[@DerekBristol]

Thanks Brian!

[@Caveworthy]

This is a well done and valuable video. Thanks, Derek!

[@DerekBristol]

Thanks Scott! I'm doing a short video on the Sight Light Shields. Probably out this week. Great product!

[@robertpayn8435]

Excellent video. Thanks for the discussion on the one- vs. two-eye methods. I've been trying to remind myself how to use one of these Suunto compasses recently, and am remembering from my caving days that I really have trouble getting the same number twice when using both eyes. I'm glad to hear I am justified in sticking to the one-eye method.

[@jaykennedy2411]

Derek, great video! I started on the Brunton Pocket Transit in the late ‘70’s. Now have the Suuntos.

[@DerekBristol]

I'm working on a Brunton Pocket Transit tutorial also. Maybe by the end of the week.

[@kayveroutdoors5411]

This is so well done! I havent really touched any survey since 2013 and I've been looking at every resource I can before starting up a new project in a couple weeks. Thanks for the work you put into this video!

[@DerekBristol]

Kayver Outdoors You’re very welcome!

[@lucfournier3939]

Wow ! Great content as always. Unfortunately no cAve to get invloved with around my place😥

[@DrewNorthup]

The comment about the X2 mod going out of production got my attention, and caused me to spend a couple hours refreshing my knowledge about implementing that sort of gadget. After all, the "CaveSniper" website doesn't even exist anymore and last I was aware there were no plans to make any more Shetland Attack Ponies.

[@CDurai]

I love how at min 01:03 you can see the compass dial move ever so slightly as the camera dollies in...

[@wilsc449]

Hi Derek, I have SUUNTO KB-14 with a lot of liquid missing. Is it a special liquid inside? What can I top it up with?

[@daniels8625]

Got a recommendation on a simple laser rangefinder from Bosch or Leica? BTW, Mark and Ed had nice things to say about you 😁

[@DerekBristol]

Mark and Ed are awesome! If you're just looking for a laser rangefinder, then you just need something that will measure distance (probably up to 50-60m). There are 20m models that is a little too short a range. You don't need any of the other bells and whistles that come on most models. Either Bosch or Leica make good units, but I like the build quality, size, and function of Leica a bit better, even though they're typically slightly more expensive. It's hard to beat the Disto D1 for value (about $72 on Amazon), but if I were buying one today I'd probably get the Disto e7100i for it's small size.