Check the listing for details. WM B Johnson GSM-110 Meter. Condition: Used. Listed at 300.00 USD. WMB Johnson GSM-110 Meter(HP-265 GM Pancake Probe sold separately)3 Range Survey Meter Description - 500, 5,000 & 50,000 CPM - .2, 2 & 20 mR/hr - Auto Low Battery & Saturation, LED's HV & battery meter - Built-In Audible - Response Variable 4-20 Seconds Application.Add a Counts.Pro (see Ebay item 401468071255) to this meter for $499 and digitally record and easily share all your measurements (a $100 discount off the regular price when you buy one of our meters): For a fraction of the price of a new meter, you can add a Counts.Pro and make your detectors more functional and easy to use than the most expensive meters available today. We are the inventor of the Counts.Pro and regularly sell and service radiation detectors for nuclear industry, medical industry, and hobbyist clients. Counts.Pro uses a free App (iOS and Android) to record and share every count measured by any pulse generating radiation detector (GM, proportional, neutron, Scintillation). With Counts.Pro you can record your surveys for review and analysis, or take long term scaler counts to measure very low radiation level changes. Each For internal use:Barcode 14356575Shelf 7D CHP Consultants dba CHP Surplus est. 2002 chpconsultants.com We offer 30-day return policy on our inventory. If you are not satisfied with an item, please contact us so we can work out a solution to your satisfaction. Due to the variety of the items, we sell through our store, we are only able to thoroughly test our items labeled as “Radiation Detectors”. We are happy to answer further questions on any item if we can. Please do not hesitate to message us if more information is needed. We are easy to reach during regular business hours. Monday through Friday 9-3.We take pain staking efforts to pack all items quickly and properly for safe shipping.We can consolidate shipping. If you place more than one order and wish to consolidate, simply message us prior to shipping and we can reduce shipping costs. Local pick up is available Oak Ridge, TN. We stand behind our eBay store. Check out CHPSurplus here for various miscellaneous equipment at a low price.