| Thomas No. | Type | Application | Max. Temp | Dimensions |
| 1225B27 | K | Small | 500ºC/932ºF | Handle Length: 4 1/2", Probe Length: 4", Probe Diam: 1/16” |
| 1225B38 | J | 450ºC/842ºF |
| 1225B28 | K | Large | 600ºC/1112ºF | Handle Length: 5 1/4", Probe Length: 8", Probe Diam: 1/8" |
| 1225B39 | J | 700°C/1292°F |
| 1225B29 | K | High temperature | 1200°C/2200°F | Handle Length: 4 1/8" Probe Length: 5
3/8", Probe Diam: 5/16" |
| 1225B30 | K | Small | 500ºC/932ºF | Handle Length: 4 1/2", Probe Length: 3
1/2", Probe Diam: 1/16" |
| 1225B31 | K | Insertion | 350°C/662°F | Handle Length: 1 3/4", Probe Length: 4",
Probe Diam: 1/8" |
| 1225B32 | K | Large | 600°C/1112°F | Handle Length: 4 1/2", Probe Length: 6",
Probe Diam: 1/8" |
| 1225B35 | K | Standard | 400°C/752°F | Handle Length: 4 1/2", Probe Diam: 1/2" |
| 1225B33 | K | Hard to access areas | 600ºC/1112ºF | Handle Length: 5 1/2", Probe Length: 8",
Probe Diam: 1/2" |
| 1225B34 | K | Magnetic, for use on stationary
metal surfaces. | 250°C/482°F | Probe Length: 1 5/8", Probe Width” 7/16" |
| 1225B36 | K | Fast response in air & gas. Sheath
protected element. | 600°C/1112°F | Handle Length: 4 1/2", Probe Length: 8",
Probe Diam: 5/16" |
| 1225B40 | J | 550ºC/1022ºF | Handle Length: 5 1/2", Probe Length: 8
1/4", Probe Diam: 1/8" |
| 1225B37 | K | Beaded wire for fast response in
air & gas in hard to access areas. | 250°C/482°F | Cord Length: 38" |
| 1225B41 | J | 200°C/392°F |