I bought this adjustable 15 inch Starrett plumbers level yesterday and it was in a box lot with other Starrett stuff.  However I don't really understand the inclination feature.  On the scale it runs from 1 to 16.  Is this the fall per foot?  I had never seen such an adjustable level before and obviously no one else at the auction knew what it was because I stole the box lot.

It appears they are graduated in 16ths of an inch per foot.

Mike

Well, that makes sense, thanks Mike.----Charles and escapee from Florida.

from 1938 starrett book..guess plumbers still use these????...everything i ever did was an estimate,,,1/4 bubble etc...??

Just goes to show, there is a solution to every mechanical problem.  Really neat level.

I guess for plumbers to make sure a drain line goes down, so that it drains properly.

Starrett bills this as an "engineer's" level.  Mine was a thank-you gift from my son for helping him with a garage cleanout.  I've used it several times*, and it's been way handier than taping blocks of wood under a regular level.

Mine says, in way tiny text near the scale, something like "1/16" per foot."
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*Setting up the outrigger support for a window air conditioner and then testing the unit for proper tilt; checking a subtle tilt on the rear floor of our RV.  That's so far; I'm sure other occasions will arise.

Plumbers grade drain pipe pretty accurately.

Sprinkler fitters grade dry pipe at 1/4" per 10' fir mains, and 1/2" per 10' for branch lines.

Chilly

Quote from: Chillylulu on October 28, 2018, 03:34:40 PMPlumbers grade drain pipe pretty accurately.

Because too steep and the water outruns the...more solid stuff; too shallow a pitch, and stuff moves too slowly.  Either way, you get to learn all about rooting out drains.

Quote from: Bill Houghton on October 28, 2018, 04:58:39 PM

Quote from: Chillylulu on October 28, 2018, 03:34:40 PMPlumbers grade drain pipe pretty accurately.

Because too steep and the water outruns the...more solid stuff; too shallow a pitch, and stuff moves too slowly.  Either way, you get to learn all about rooting out drains.

And you can't chew your fingernails.

Chilly

Quote from: Chillylulu on November 01, 2018, 11:30:32 AM

Quote from: Bill Houghton on October 28, 2018, 04:58:39 PM

Quote from: Chillylulu on October 28, 2018, 03:34:40 PMPlumbers grade drain pipe pretty accurately.

Because too steep and the water outruns the...more solid stuff; too shallow a pitch, and stuff moves too slowly.  Either way, you get to learn all about rooting out drains.

And you can't chew your fingernails.

Chilly

YUCK!!!

Mike

Well said, Mike.

in  plumbing terminology its known as the self scouring  effect ( in other words every time you flush your toilet your pipes are being cleaned ) different types and sizes of DWV piping may require differing pitch /fall angles . most all piping be it refrigerant piping ,water supply ect , require some pitch angle as necessary to self drain when not in use and or to prevent refrigerant /oil trapping ect ,.