255-205 & 255-210 Stillwells
Stillwells are made from passivated stainless steel. The vertical tube is supported by a triangular base with levelling screws at each corner. It is placed in the evaporation pan to support a fixed point or hook gauge. The Stillwell (also known as a Stilling Well) makes readings more precise by eliminating surges and ripples in the water level caused by wind.
The 255-205 Stillwell is placed in the evaporation pan to support a hook gauge. Two small openings located opposite each other near the base permit the flow of water in and out of the well. Used with 255-214 (imperial) or 255-215 (metric) Hook Gauges.
The 255-210 Stillwell with Fixed Point features a pointed rod centered inside the base of the stillwell. When in position, the tip of the rod is approximately 7.5 inches above the bottom of the evaporation pan. There are two small openings located opposite each other near the base that permit the flow of water in and out of the well. Water is added to the evaporation pan until the water level reaches the tip of the rod. After a day of evaporation, the water level will be below the tip. A 255-211 Replacement Graduate is then used to measure water into the evaporation pan until the water level reaches the tip of the rod. The amount of water required to refill the evaporation pan provides an indication of the day's evaporation.
Specifications
MODEL 255-205
- Material: Passivated Stainless Steel
- Size: 4″ Dia x 9″ H (102 mm x 229 mm)
- Weight/shipping: 6.5 lbs/10 lbs (2.9 kg/4.5 kg)
MODEL 255-210
- Height of point: 7.5 (191 mm)
- Material: Passivated Stainless Steel
- Size: 4″ Dia x 9″ H (102 mm x 229 mm)
- Weight/shipping: 6.6 lbs/10 lbs (3.0 kg/4.5 kg)
- NSN 6660-00-909-0326
Downloads
- 255-200 Series Data Sheet
- 255-205 Manual – available on request
Shipping Info
Important Notes About Shipping Charges
Unless specific instructions accompany the order, we will use our judgment as to the best method of shipment. Most orders are shipped via United Parcel Service. Special arrangements can be made for other carriers. All shipments are F.O.B. Grass Valley, California. Title and risk of loss will pass to the purchaser upon delivery to the freight carrier. The purchaser is responsible for all transportation and insurance charges. Shipping containers are not returnable.
The shipping charges provided by our website shopping cart are estimated based on the individual items in your order. If you are in the United States and have ordered more than one item, the actual shipping charge will sometimes be less than the amount quoted. If we have overcharged you for shipping, we will refund the difference after your order is shipped. If the actual shipping charge is higher than the amount quoted, we will contact you before shipping your order.
If you have any questions or special requirements, or to request an exact freight quote, please send a message or call us at +1 (530) 823-7185.
