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09-30-2014, 05:12 AM
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#1
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Guru
Join Date: Oct 2007
Posts: 22,553
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Glass tricks?
I have a sealed overhead hatch that is installed with rubber , similar to a car windshield.
I need to purchase new sealing rubber.
I do not know the thickness of the glass , and am hoping someone has a system to measure the glass with out taking it out.
Trick time???
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09-30-2014, 05:38 AM
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#2
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Enigma
City: Slicker?
Join Date: Oct 2007
Posts: 16,567
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Greetings,
Mr. FF. Although NOT exact you can get a pretty good idea of glass thickness by placing a set of vernier calipers end on (jaw end farthest from glass) against one surface, extending the depth probe and "eyeballing" the internal reflection of the opposite surface.
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RTF
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09-30-2014, 06:14 AM
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#3
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,835
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If it is a hatch that opens, take the above mentioned calipers and add 2 small round objects such as marbles (one between the glass top and the caliper, one between the bottom and the caliper) and measure the total thickness. Then measure the round objects and subtract them.
Ted
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Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
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09-30-2014, 08:02 AM
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#4
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Guru
City: Hotel, CA
Join Date: Sep 2011
Posts: 8,323
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I second RT on this as I've gotten pretty close with that method before.
__________________
Craig
It's easier to fool people than to convince them that they've been fooled - Mark Twain
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09-30-2014, 08:23 AM
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#5
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Guru
City: Sioux Falls, South Dakota
Vessel Name: Xanadu
Vessel Model: Mainship 37 Motor Yacht
Join Date: Oct 2013
Posts: 2,472
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I used to think that calipers were fussy, expensive engineers' devices, but then I bought a decent set (digital) for like $40. My work is much more precise now and going back to dealing in 1/16ths or 1/32nds is a pain in the neck.
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09-30-2014, 10:29 AM
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#6
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Guru
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 5,308
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Step 1: Find a big rock.
Step2: Oh never mind, you know the rest.
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Parks Masterson
Retired from Hopkins-Carter Marine Supply
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10-01-2014, 05:03 AM
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#7
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Guru
Join Date: Oct 2007
Posts: 22,553
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The skylight does not open.
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10-01-2014, 06:04 AM
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#8
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Guru
City: Sioux Falls, South Dakota
Vessel Name: Xanadu
Vessel Model: Mainship 37 Motor Yacht
Join Date: Oct 2013
Posts: 2,472
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Uh oh - you may be stuck with Hopcar's solution. Seriously though, I assume it's tempered glass. Any manufacturer's mark or inscription in a corner you could Google?
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10-01-2014, 06:36 AM
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#9
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Moderator Emeritus
City: Cameron, La
Vessel Name: Baobab
Vessel Model: Bayliner 4788
Join Date: Aug 2013
Posts: 2,660
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A Laser Distance Measurer laid flat on the window with a reflector on the other side will give an accuracy of 1/25". (Bosch GLR825). This is on their digital measuring tape. I am sure there are more accurate ones out there. Maybe a glass company could advise?
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