ASTM Precision Series

Primary Reference Standard

• Etched stem mercury-in-glass thermometers manufactured in strict accordance with ASTM and National Institute of Standards and Technology (formerly NBS) specifications.
• Thermometers 62 through 68 are manufactured of yellowback glass with PERMETCH, KESSLER's brand of permanent pigmentation of thermometer graduations.
• Thermometers 69 and 70 are fabricated of whiteback borosilicate type glass for extended high temperature bulb stability.
• Extensively aged and annealed for minimal scale error and extended life.
• Auxiliary ice point reference scale for verification of main scale corrections.

ASTM   Cat No   Application   Range         Div   Length   Immersion

62C    1300     Precision     -38 to 2C     0.1   379mm    total
62F    1320     Precision     -36 to 35F    0.2   379mm    total
63C    1302     Precision      -8 to 32C    0.1   379mm    total
63F    1322     Precision      18 to 89F    0.2   379mm    total
64C    1304     Precision      25 to 55C    0.1   379mm    total
64F    1324     Precision      77 to 131F   0.2   379mm    total
65C    1306     Precision      50 to 80C    0.1   379mm    total
65F    1326     Precision     122 to 176F   0.2   379mm    total
66C    1308     Precision      75 to 105C   0.1   379mm    total
66F    1328     Precision     167 to 221F   0.2   379mm    total
67C    1310     Precision      95 to 155C   0.2   379mm    total
67F    1330     Precision     203 to 311F   0.5   379mm    total
68C    1312     Precision     145 to 205C   0.2   379mm    total
68F    1332     Precision     293 to 401F   0.5   379mm    total
69C    1314     Precision     195 to 305C   0.5   379mm    total
69F    1334     Precision     383 to 581F   1.0   379mm    total
70C    1316     Precision     295 to 405C   0.5   379mm    total
70F    1336     Precision     563 to 761F   1.0   379mm    total

       1296 Complete set of Celsius ranges ASTM 62C through 70C 
            furnished in a velvet lined protective case.

       1298 Complete set of Fahrenheit ranges ASTM 62F through 70F
            furnished in a velvet lined protective case.