Level

cat christmas 1 europe in map war world gunite pool wholesale cellular phone accessory blue green algae free mp3 mobile ringtone spinner swedish swearing saigon girls oak international incorporate afi this time imperfect tabs ti 83 graphing calculator asian marriage agencies lexmark z750 detroit michigan advanced jujitsu book chart compatibility free relationship pain pill identify tire truck wheels ebony anal raising quails http sasha singleton white crab spider uk green roof research hair cuts unique constraint sql server 2000 female bare butts teens fucked in the woods white dress pants men jubilee margaret walker notes moldy peaches ricin a chain site searcher web starship blue print randy river book stores diecast collectibles store a word to the black man los angeles times tamiflu online removing pubic hair texas hold em poker leather motorcycle apparel flight lesson pilot private training lesbian girls blonde louisiana festivals barrister bookcases bookmark sex tommy left unresolved todays health problems boat rv trader nelly n dey say scientific atlanta unlimited ismrm 2006 build personal computer free sex dvd ut vols los cabos airport transfers miss shop au darkstalkers women local wage tax adenoma nothing in common hanks compatibility horoscope monica seles smoke detector christmas ornament mp3 to ringtone converter leads for your business anaerobic chamber jennifer lopez gets fucked on australian money fancy color diamond wedding rings ass fucking ed zappa teeth whitening alaska hwy marine nag head real estate agent map installing usb 2.0 drivers adventure new zealand crazy frog popcorn al listen song weird online real estate courses eminem kim mescaline animal wallpaper maya computer art sony laptop computer haunted houses porsche 996 part aarp medical alert alarm system brazil jersey soccer eye costa rica cruise real estate tampa bay florida cheerleader car wash man briefs speedo wet gallery wax myrtle spacegard air filter arrangement flower fresh make quality system inside paris lennox air conditioning systems kitchen islands ideas foam shapes tourisme alpes maritimes boost mobile ringtone movie courtney cox nude golf percentages follicular unit extraction celexa drug modular home plan north carolina french hardcore sex reception area seating concerta price loggerhead turtle habitat alpine dental group stupid prices vh1 trey panama surfing discount plus size lingerie adobe photoshop download webmap young katie preserving leather furniture seralago hotel in orlando satellite tv dvd player code free adjunct online teaching position were having a baby dvd princess blue eyez beach boobies tom johnson photography veteran sample atkins diet menu titfucking keith richards adam brian undertaker birthday decoration beau rivage saint martin car rental nasty women link free hentai rpg game kid nick.com nickelodeon zoom it modems sailor moon lesbian sex saeco incanto digital automatic espresso machine flash action script san diego vending machines rv sales in minnesota neopets code one touch of venus mobile home parks lear corporation american actors equity association fort fisher miniature pinscher puppy sale molly pitcher hotel red bank new jersey physical therapy for rotator cuff surgery alligator pitbull ministerio de justicia espana cell d407 phone review samsung marilyn manson personal jesus video download sweatshirt mega titten dvd nursing management of pain free web design template car car magazine max power r and b married dating sites mosbys comprehensive review of dental hygiene caduet customercarecenter growingfamily.com free home sex video 1861 1865 fought they diesel transfer tanks cartoon sex play game vintage star wars cooking crab frozen king leg big book of breast dirt jumps stereophonics tour dates 2005 ameritrade login plus.com art clip nude stupid people video clip british boys your just too good to be true lyric hairy leg picture buy baseball caps northern michigan computer sales hand cream inetinfo.exe memory leak lipitor cholesterol single dating services gay male underwear mosquitoes starboards export documentation course Levels are used to accurately determine horizontal, vertical and other angles.

Level Types

Spirit Level

The most common and well known level of all.

Only one DIYer is known to be unfamiliar with this common tool, Mr Nseowo:

• http://news.bbc.co.uk/1/hi/england/shropshire/3142762.stm
• http://www.google.com/search?hl=en&lr=&rls=en&hs=JXB&q=nseowo+extension&btnG=Search

It is possible for a knock to misalign the vials, so a spirit level should be tested if dropped.

Spirit levels are also available with several vials, enabling reading of various angles close to horizontal, eg 1 degree, 2 degrees etc

Glass vs Plastic Vials

Glass vials:

• rarely scratch
• never cloud
• are breakable
• only work the right way up, as the tube is parallel sided, and is curved slightly

Plastic vials:

• are much more robust against knocks
• scratch easily
• go cloudy in time
• work any way up, since the tube is tapered instead of curved one way.

Needless to say some folk swear by glass, and some will only buy plastic.

Card Level

An uncommon but versatile level capable of finding all angles.

• Determines all angles
• Easily improvised
• Small, lightweight & compact
• Affected by wind
• Fragile if made from card, robust if made from plastic

Make one

Plumb Bob

The Plumb bob is a simple weight on a string. The weight has a pointed bottom, and indicates the vertical.

• Affected by wind
• Does not settle instantly
• Easily improvised

Laser Level

A laser level can project a vertical or horizontal line of light onto the workpiece. This makes level visible without needing a hand to hold the level, and without marking the workpiece.

However this does not necessarily make things easier or quicker due to setup time. IME a long spirit level is often quicker to use.

Other one

Set square with mini plumb bob in it, I forget the name

• Reads horizontal & vertical

Water Level

This is a flexible tube containing water. Wherever the ends of the tube are placed, water at both ends will settle at the same height.

Useful for finding level over a long distance.

May be made by using either clear tubing or a hosepipe with a short distance of clear tube or a funnel at each end.

Line Level

A line level is a miniature spirit level that is hooked onto a horizontal line. The level must be attached at the centre of the line otherwise considerable errors are introduced. Uneven line surface can also affect accuracy in some cases. For these reasons it is not as accurate as rigid spirit levels.

• Spans long distances
• Accuracy variable
• Indication is generally far from where the line ends are being held

Post Level

This is a 3 vial L-shaped spirit level that determines all 3 axes of level for vertical posts. Used for fencing.

Dumpy Level

A levelled telescope used with a staff (pole) for transferring a level around a site. Used with 2 people. Simple and very accurate.

Testing a Level

Spirit Level

Spirit levels dont always read correctly. How to test:

Place level on a surface that is level or close to level. For precision, adjust or pack the surface so it reads level.

Turn the level round. It should read the same each way round. If it does, it reads correctly.

If it doesn't indicate the same each way, the vial position can usually be adjusted. Meanwhile the correct indication is halfway between the 2 spirit level indications.

Card Level

The same approach is used as with a spirit level, take a reading, turn the card round and read again. Both readings should be identical. If not, the card can have a corner snipped to level it.

Plumb Bob

A plumb bob will always read level providing the weight is symmetrical and hanging symmetrically. Even if not, the string will always read correctly, though the weight may not. Thus improvised plumb bobs are the only ones in need of testing.

There are 2 ways to test plumb bobs.

1. Determine vertical level by another accurate means, and compare the plumb bob's reading
2. Set the plumb bob weight to slowly rotate without it swinging. This is done by twisting the string so that horizontal swing settles before rotation settles. Once swing has settled, the indication should not move at all with rotation.

See also

Card Level

Wiki Contents

Wiki Subject Categories