| 301 | Lutron PH-221 PH Meter, ATC, Two Displays | |
| 302 | Lutron PH-207HA PH Meter | |
| 303 | Lutron PH-207 PH Meter, RS-232 | |
| 304 | Lutron ORP-14 ORP Electrode, Professional | |
| 305 | Lutron NI-214 Alkaline Negative Ion Water Tester | |
| 306 | Lutron YK-23RP ORP Meter | |
| 307 | Lutron ORP-213 Pen ORP Meter, Separate Probe | |
| 308 | Lutron ORP-203 Pocket ORP Meter | |
| 309 | Lutron PMS-714 Soil Moisture Meter | |
| 310 | Lutron PMS-713 Pen Moisture Meter (Wood/Concrete) | |
| 311 | Lutron MS-7013 Wood Moisture, Pinless | |
| 312 | Lutron MS-7012SD Humidity Content Meter, + type K/J Temp., SD Card (Grain, Corn, Rice. Cotton, Paper, etc) | |
| 313 | Lutron MS-7003 Moisture Meter (Wood, Concrete) | |
| 314 | Lutron MS-7002 Moisture Meter (Wood, Concrete, Gypsum) | |
| 315 | Lutron MS-7000HA Moisture Meter (Wood) | |
| 316 | Lutron MO-2014 Portable Micro-Ohm Meter | |
| 317 | Lutron MO-2013 Bench Milliohm Meter | |
| 318 | Lutron MO-2001 Portable Milliohm Meter | |
| 319 | Lutron SL-4112P Sound Level Meter, auto range + Type K/J Thermometer | |
| 320 | Lutron LM-8102 5 in 1 Meter, Sound level, Humidity, Anemometer, Light and Type K thermometer. | |
| 321 | Lutron LM-8100 4 in 1 Meter | |
| 322 | Lutron LM-9000 7 in 1 Meter | |
| 323 | Lutron LM-8010 5 in 1 Anemometer Meter, Air flow, Humidity, Light & Type-K Thermometer | |
| 324 | Lutron LM-8000A 4 in 1 Meter Anemometer, Humidity, Light & Type-K Thermometer | |
| 325 | Lutron YK-37UVSD UVA,UVC Light Meter, SD Card | |
| 326 | Lutron YK-35UV UV Light Meter | |
| 327 | Lutron UVC-254SD UVC Light Meter, SD Card | |
| 328 | Lutron UVA-365SD UVA Light Meter, SD Card | |
| 329 | Lutron UVC-254A UVC Light Meter, RS-232 | |
| 330 | Lutron UVA-365A UVA Light Meter, RS-232 | |