| ACTUATING MEDIUM | MERCURYMERCURY |
| BULB TIP OUTSIDE DIAMETER | 0.625 INCHES NOMINAL0.625 INCHES NOMINAL |
| DESIGN TYPE | FLUCTUATINGFLUCTUATING |
| EXTENSION NECK DIAMETER | 1.500 INCHES NOMINAL1.500 INCHES NOMINAL |
| EXTERNAL THREAD SIZE | 1 IN. NPT1 IN. NPT |
| FEATURES PROVIDED | LENS MAGNIFYING FRONTLENS MAGNIFYING FRONT |
| INTERNAL THREAD SIZE | 1-1/4 IN. -18 NEF-21-1/4 IN. -18 NEF-2 |
| MATERIAL | BRASS OR IRON MALLEABLE OR STEEL OR ALUMINUM ALLOY METER CASE |
| NECK LENGTH | 2.500 INCHES NOMINAL2.500 INCHES NOMINAL |
| NONDEFINITIVE SPEC/STD DATA | 3 CLASS AND B FORM AND F RANGE AND 1 TYPE |
| SOCKET OVERALL LENGTH | 6.813 INCHES NOMINAL6.813 INCHES NOMINAL |
| SCALE ADJUSTMENT VARIATION | 2 DIVISION2 DIVISION |
| SCALE INSCRIPTION/BACKGROUND COLOR | BLACK MARKING ON SILVER BACKGROUNDBLACK MARKING ON SILVER BACKGROUND |
| SCALE SMALLEST INCREMENT | 10.0 DEG FAHRENHEIT10.0 DEG FAHRENHEIT |
| SCALE TYPE | VERTICALVERTICAL |
| SEPARABLE SOCKET STYLE | LAGGING EXTENSIONLAGGING EXTENSION |
| SURFACE TREATMENT | ENAMEL METER CASE |
| TIP LENGTH | 2.563 INCHES NOMINAL2.563 INCHES NOMINAL |