Take the guesswork out of your drilling with the 1000 Grain Weigher and Drilling Calculator. This two-in-one tool provides the precision needed to calculate the exact thousand grain weight (TGW) of your crop- a critical step in determining the correct seed rate for optimal plant establishment.
The kit features a reliable weigher and the ingenious Culverthorpe slide rule, designed to help you quickly convert TGW into precise kg/ha seeding rates right in the field. Whether you are using farm-saved seed or need to adjust for certified seed batches without provided TGW data, this durable, manual calculator is the perfect field companion for ensuring accuracy during your busiest planting windows.
Key Benefits
On-Field Precision: Quickly calculate TGW and adjust your drill settings without needing external software or office equipment.
The Culverthorpe Advantage: Includes the classic, easy-to-use slide rule for instant seed rate conversions.
Maximise Yields: Achieve your target plant population by accurately matching seed weight to your drilling requirements.
Versatile Use: Ideal for all cereal crops, particularly useful for growers using Farm Saved Seed.
Robust & Reliable: A manual, battery-free tool that works wherever you are in the field.
Best For: Calculating precise seed rates (kg/ha) when drilling by seeds per square meter.
When to Use: Use before drilling to adjust your machinery to the specific density of your current seed batch.
How to Use: Simply weigh a representative sample using the weigher, then use the Culverthorpe slide rule to determine your target drilling rate.
How much is delivery?
Delivery is included in the price for seed orders, where delivery is chargeable, for example on some equipment, it is outlined on the product page.
How quickly will my order arrive?
We aim to process all orders placed before 12 noon on the same day. Any orders placed after that time will be processed on the next available working day.
We will send you a notification email when your order has been despatched.
Delivery will normally take 3-4 working days from the despatch of the order.
While we always try our best to despatch every order following the above guidelines, during extremely busy periods despatch times may increase by up to one day. In addition we will inform you at checkout if delivery may take a little longer due to high demand.
Special delivery instructions
If you have any special instructions for delivery, such as leaving your parcel with a neighbour, please include them in the ‘special instructions’ section at the checkout. Please note that our couriers will not respond to notes left on doors for security reasons
All orders are thoroughly checked before leaving our premises. On receipt of your order we request that you check the items as soon as possible. If you are unhappy with your order for any reason, please contact us on 01208 881198 or info@swseeds.co.uk. Please have your order number to hand when you contact us as it will allow us to find your order quickly.
If you are unsatisfied with your order in any way, please return it to us within 14 days of delivery for a refund or exchange. The item must be unused, be in its original packaging and be suitable for re-sale. Postage costs for returning items to us cannot be refunded, unless the item is faulty or damaged.
We recommend that you send your order back to us using a tracked delivery service as we cannot be held responsible for any parcel lost during transit to us.
Our return address is:
South West Seeds
Treswarrow Farm
St Endellion
Port Isaac
Cornwall
PL29 3TN
Once your item has been returned, we will inspect it and take the necessary action as soon as possible.
Faulty/Damaged Goods:
If any item you receive from us arrives damaged, please contact us as soon as possible on 01208 881198 or by email info@swseeds.co.uk. We will then advise you on the best course of action.
In most cases we will ask you to return the item to us for an exchange or refund. Unfortunately we cannot refund your postage costs when you return an item to us unless the item is faulty.
Please check your order before you sign for it from the courier. If the item is faulty or damaged in any way, please do not sign for it and the courier will return the item to us. We will then send a replacement item out as soon as possible.
Returns
Please contact us in reference to any returns. Bags and boxes must not be opened and must be in a resalable condition and must be returned within 28 days. If a special order/mix has been prepared for you, this is non-returnable.
