Intro
A thermometer is a device that measures temperature or a temperature gradient (the degree of hotness or coldness of an object). A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the pyrometric sensor in an infrared thermometer) in which some change occurs with a change in temperature; and (2) some means of converting this change into a numerical value (e.g. the visible scale that is marked on a mercury-in-glass thermometer or the digital readout on an infrared model). Thermometers are widely used in technology and industry to monitor processes, in meteorology, in medicine, and in scientific research.
A hydrometer is an instrument used for measuring the relative density of liquids based on the concept of buoyancy. They are typically calibrated and graduated with one or more scales such as specific gravity.
A hydrometer usually consists of a sealed hollow glass tube with a wider bottom portion for buoyancy, a ballast such as lead or mercury for stability, and a narrow stem with graduations for measuring. The liquid to test is poured into a tall container, often a graduated cylinder, and the hydrometer is gently lowered into the liquid until it floats freely. The point at which the surface of the liquid touches the stem of the hydrometer correlates to relative density. Hydrometers can contain any number of scales along the stem corresponding to properties correlating to the density.
Hydrometers are calibrated for different uses, such as a lactometer for measuring the density (creaminess) of milk, a saccharometer for measuring the density of sugar in a liquid, or an alcoholometer for measuring higher levels of alcohol in spirits.
Chemical Thermometers, Mercury Filled 30 cm. Long, accuracy+1 division, made from Imported Capillary, Screen Printed Graduation.
| Cat. No. | RANGE | DIVISION | Price |
|---|---|---|---|
| 971/1 | 0-50°C | 1/1 | 000 |
| 971/2 | 0-50°C | ½ | 000 |
| 971/3 | 0-100°C | 1/1 | 000 |
| 971/4 | -10-110°C | 1/1 | 000 |
| 971/5 | -10-110°C | ½ | 000 |
| 971/6 | 0-150°C | 1/1 | 000 |
| 971/7 | 0-200°C | 1/1 | 000 |
| 971/8 | 0-250°C | 1/1 | 000 |
| 971/9 | 0-300°C | 2/1 | 000 |
| 971/10 | 0-360°C | 2/1 | 000 |
| 971/11 | 0-220°F | 1/1 | 000 |
| 971/12 | 0-80°R | 1/1 | 000 |
Precision Chemical Thermometers, Accuracy +1 division.
| Cat. No. | RANGE | DIVISION | Price |
|---|---|---|---|
| 973/1 | -10-50°C | 1/5 | 000 |
| 973/2 | -10-50°C | 1/10 | 000 |
| 973/3 | -10-110°C | 1/5 | 000 |
| 973/4 | -10-110°C | 1/10 | 000 |
Thermometers, with cone, enclosed Type. Accuracy +1 division.
| Cat. No. | RANGE | CONE | Price |
|---|---|---|---|
| 974/1 | -10-50°C | 10/19 | 000 |
| 974/2 | -10-110°C | 14/23 | 000 |
| 974/3 | 0-250°C | 14/23 | 000 |
| 974/4 | 0-360°C | 14/23 | 000 |
| 974/5 | -10-110°C | 19/26 | 000 |
| 974/6 | 0-250°C | 19/26 | 000 |
| 974/7 | 0-360°C | 19/26 | 000 |
981. Wet and Dry Thermometer
Specific Gravity Hydrometers, in 100 degree range, shot weighted with paper scale.
| Cat. No. | Range | Price |
|---|---|---|
| 1001/1 | 600-700 | 000 |
| 1001/2 | 700-800 | 000 |
| 1001/3 | 800-900 | 000 |
| 1001/4 | 900-1000 | 000 |
| 1001/5 | 1000-1100 | 000 |
| 1001/6 | 1100-1200 | 000 |
| 1001/7 | 1200-1300 | 000 |
| 1001/8 | 1300-1400 | 000 |
| 1001/9 | 1400-1500 | 000 |
| 1001/10 | 1500-1600 | 000 |
| 1001/11 | 1600-1700 | 000 |
| 1001/12 | 1700-1800 | 000 |
| 1001/13 | 1800-1900 | 000 |
| 1001/14 | 1900-2000 | 000 |
Brix Hydrometer, Shot weighted, with paper scale, built in thermometer.
| Cat. No. | Range | Price |
|---|---|---|
| 1007/1 | 0-10Bx | 000 |
| 1007/2 | 10-20Bx | 000 |
| 1007/3 | 20-30Bx | 000 |
| 1007/4 | 30-40Bx | 000 |
| 1007/5 | 40-50Bx | 000 |
| 1007/6 | 50-60Bx | 000 |