Author Topic: vision targets  (Read 2832 times)

Louis L

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vision targets
« on: January 13, 2017, 03:50:07 PM »
Here are the numbers related to vision targeting (section 3.13 of manual):

Boiler:
This is a pair of horizontal tapes below the neck of the boiler
4 inch wide tape; from 7'0" to 7'4" from carpet
4 inch gap between tapes
2 inch wide tape; from 6'6" to 6'8" from carpet

Lift peg:
This is a pair of vertical tapes flanking the lift peg
2 inch wide tape, 5 inches tall.
10-3/4 inches from bottom of tape to carpet
10-1/4 inches from outer edge to outer edge horizontally. Peg is centered in this gap horizontally
Lift peg - bottom of peg is 13 inches from carpet. Peg is almost centered in the tape gap vertically

Louis L

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Re: vision targets
« Reply #1 on: January 16, 2017, 11:45:09 AM »
I'm wondering. Why does the boiler vision target have 2 stripes of different sizes?
Why 2 stripes instead of 1?
Why different sizes?