Hook Gage 4

For Ultra Precise Laboratory and Commercial Applications Dwyer Hook Gages are noted for their extreme readable accuracy in measuring low pressure and vacuum They are particularly suited for high precision industrial test work and for use in scientific laboratories Fan manufacturers find Dwyer Hook Gages indispensable in checking instruments for measuring air flow Oil burner manufacturers can make exact laboratory draft tests They also provide the standard against which other instruments can be calibrated Simplified action is the secret of the Dwyer Hook Gage The only moving parts are two stainless steel hooks controlled by standard depth micrometers Passing through the leak proof stuffing box at the base each hook shows a slight dimple at the point of contact with the fluid After leveling the gage and zero setting the hooks pressure is applied and the resulting vertical movement of the water is read directly from the micrometers the sum of the two being the pressure A skilled operator can locate one hook relative to the other within 001 of pressure Model 1420 Hook Gage with 0 2 Full Scale Range Model 1420 Hook Gage is the ideal low cost instrument for critical low range pressure and vacuum measurements Full scale range is 0 2 w c of water 2 1 2 diameter water columns reduce the effect of capillary attraction to a minimum level vial has sensitivity of 115 125 seconds for 2 mm of bubble movement The two depth micrometers comply with Federal specifications GGG C 105C and are traceable to a master at the NIST Furnished complete with mounting panel 3 4 oz bottle of fluorescein green color concentrate and wetting agent and one set of type A connectors Model 1425 Hook Gage with 0 12 or 0 24 Full Scale Range Model 1425 Hook Gage provides a reliable and extremely accurate standard against which other instruments can be checked or calibrated Its range and accuracy also make it a valuable laboratory instrument for maximum precision industrial test work The model 1425 12 has a full scale range of 0 12 water with 001 divisions and the model 1425 24 has a full scale range of 0 24 water with 001 divisions Both models have permanent 001 accuracy Accuracy is assured because there are no hidden tubes to trap air bubbles no long lead screws with the possibility of cumulative errors The depth micrometer and end measuring rods comply with Federal specifications GGG C 105A and are traceable to a master at the NIST Furnished with 3 4 oz bottle fluorescein green color concentrate 2 level vials dust cover full set of 2 interval end measuring rods with protective case Road ends are spherical to eliminate misalignment errors Also included is one pair of type A connectors EXAMPLE 1420 AT Series 1420 AT Hook Gage range 0 2 water with aluminum tag SERIES 1420 M1420 1425 12 1425 24 M1425 325 M1425 625 Hook Gage Range 0 2 Water Hook Gage Range 0 50 mm Water Hook Gage Range 0 12 Water Hook Gage Range 0 24 Water Hook Gage Range 0 325 mm Water Hook Gage Range 0 625 mm Water OPTIONS A B C D E AT Type A Connections Type B Connections Type C Connections Type D Connections Type E Connections Aluminum Tag Model Number Description 1420 Hook gage range 0 2 w c M1420 Hook gage range 0 50 mm w c 1425 12 Hook gage range 0 12 w c 1425 24 Hook gage range 0 24 w c M1425 325 Hook gage range 0 325 mm w c M1425 625 Hook gage range 0 625 mm w c