FEATURES OF THE MODEL 424

1 ? THICK ACRYLIC PLASTIC BODY is a solid block, virtually unbreakable, stable 
and absolutely free of the danger of distortion.

3/16" BORES, ACCURATE TO ± .0002" are permanently free of bends or crooks, 
will not require recalibration because of distortion.

GROUND GLASS BUBBLE LEVEL sensitive to 115-125 sec./2 mm. Is 1 ? long x .375" 
diameter and provided with two red lines for easy visibility and alignment.

SELECTED GAGE OIL with high wetability characteristics forms a consistent, well
 shaped meniscus for perfect readability.

O-RING SEALED FLUID LEVEL PLUNGER ADJUSTMENT for easy zeroing.


Inclined-Vertical Manometers Accurate to ± 1% ?Series 420  

Service Manual
 Fig. 8-2. Typical of Series 420 Inclined-Vertical Manometers is this No. 422-
10 double column manometer with a total range of 0 to 10" of water. Single 
column models are also furnished. Design features are essentially the same as 
for the Series 424. They are accurate to ±1% and are particularly suited for 
use with pitot tubes and in flow measurement or similar applications 

STANDARD ACCESSORIES:
Includes two ?oz. bottles of .826 red gage oil (1.91 blue gage oil for models 
421-23 and 422-23), rapid shut-off type "a" connections, two 3 ft. lengths of 
clear plastic tubing and two 1/8" NPT tubing adapters - two sets for double 
column models.

 

Ranges and Dimensions
Suitable for total pressure 
up to 100 psig, temperatures up to 150°F.
STOCKED MODELS in 
bold




Model
No.
Inclined
Ranges
Inches
of Water
Inclined
Minor
Div.
Length
of
Inclined
Scale
Vertical
Range
Inches
of Water
Vertical
Minor
Div.
Length
of
Vertical
Scale
Dimensions
Weight
lbs.-oz.

A
B
C
D
E
F
G

Single
Column 
424-5
424-10 
0-2.0
0-2.0 
.01
.01 
20"
20" 
2.1-5
2.1-10 
.10
.10 
3 ¼"
9" 
10 ½"
16 ½" 
25 ¼"
25 ¼" 
12 5/8"
12 5/8" 
1"
1" 
10 ½"
10 ½" 
5 3/8"
5 3/8" 
10"
16" 
14-8
22-12 

421-5
421-10
421-23 
0-1.0
0-1.0
0-2.2 
.01
.01
.02 
6 ½"
6 ½"
6 1/8" 
1.1-5
1.1-10
2.4-23.0 
.10
.10
.20 
4 5/8"
10 1/8"
10 ¼" 
9 7/8"
15 ½"
15 ½" 
9 5/8"
9 5/8"
9 
5/8" 
4 7/8"
4 7/8"
4 
7/8" 
5/8"
5/8"
5/8" 
6 ½"
6 ½"
6 ½" 
3 ¼"
3 ¼"
3 ¼" 
9 7/8"
15 ½"
15 ½" 
4-12
6-10
6-10 

Double
Column 
422-5
422-10
422-23 
0-1.0
0-1.0
0-2.2 
.01
.01
.02 
6 ½"
6 ½"
6 1/8" 
1.1-5
1.1-10
2.4-23.0 
.10
.10
.20 
4 5/8"
10 1/8"
10 ¼" 
10 ½"
16 1/8"
16 1/8" 
11 ½"
11 ½"
11 ½" 
5 1/8"
5 1/8"
5 
1/8" 
5/8"
5/8"
5/8" 
6 ½"
6 ½"
6 ½" 
3 ¼"
3 ¼"
3 ¼" 
10 ½"
16 1/8"
16 1/8" 
6-10
10-13
10-12 

*424-250MM
0-50MM
.2MM
19 5/8"
52-250MM
2.0MM
8 7/8"
16 ½"
25 ¼"
12 5/8"
1" 
10 ½"
5 3/8"
16"
22-12

*Single colunm metric-ranges and divisions in 
millimeters

A/S가능