1. Suitable for use on all freon service applications.
2. Field include: refrigerating units, compressors etc.
Specification: 
1. Dimension: 63mm. 
2. Accuracy: class ±1.5%. 
3. Pressure range: -30 in hg ~500 psi, 76 cm hg~35kg/cm-30in hg~500psi. 76cm hg~35kg/cm². 
4. Operating temperature: operating temperatur.e 
5. Connections: brass alloy, radial or center back mounting. 
6. Connector diameter: 14mm. 
7. Radial connect: 1/8’’ npt. 
8. Center back: 7/16’’ unf. 
9. Sensing element: bourdong tube, brass alloy,≦70kg/cm-30in hg~500psi, 76cm hg~35kg/cm² (bar) coil. 
10. Movement: brass alloy. 
11. Dial: aluminium in white & lettering in black. 
12. Pointer: aluminium in black. 
13. Case dry case: Painted stainless steel or abs plastic, colour coded, blue for low. pressure and red for high pressure. 
14. Fluid filled: Aisi 304. 
15. Upper ring: lbm/cbm: aisi 304 Lm: pc. 
16. Filling: glycerine(99.5%). 
17. Window: pc. 
18. Order options: 
(1) Glycerine. 
(2) Front or rear flang. 
(3) Extemal adjustable red mark pointer (max. or set pointer). 
(4) U-shape clamp.