1. Determine gauge head size and material. The following choices are available:

a. Junior aluminum bolted head, 2 1/32“ bolt circle.
b. Junior brass bolted head, 2 1/32” bolt circle.
c. Senior aluminum bolted head, 2 ½" bolt circle.
d. Senior brass bolted head, 2 ½" bolt circle.
e. 1¼" NPTF threaded Junior zinc head
f. 1¼" NPTF threaded Junior brass head
g. 1" NPTF threaded Junior zinc head
h. 1" NPTF threaded Junior brass head

2. Specify tank diameter (on the tank nameplate, or measure the circumference of the tank, from the diameter can be calculated.

3. Specify gauge mounting location:

a. Top             b. End or side at centerline             c. Angle

4. If on the tank end, state head shape (hemispherical or semi-ellipsoidal)

5. If the gauge is angle mounted:

a. Specify the degree of the angle from the horizontal centerline, or:
b. Specify the distance in inches from the horizontal centerline vertically to the center of the gauge opening.

6. Specify the “H” dimension (riser height). This is the distance in inches from the top of the coupling or flange to the outside surface of the tank.

1. Determine gauge head size and material.

2. Specify tank diameter, or measure the circumference of the cylinder.

3. Specify the height of the cylinder (not including foot ring).

4. Specify the distance from the center of the gauge opening to the outside wall of the cylinder.

5. Specify the “H” dimension, the measurement from the highest point of the cylinder head to the top of the coupling or flange.

6. Specify tank capacity (200 lb., 300 lb., 420 lb.)

7. Furnish the name of the cylinder manufacturer.