Federation Football Rule Change 2019

The NFHS has approved the Ready for Play Timing Rule Change. Here’s how to update your Ready-Ref Timers.

Personal Timers

If your serial number is 1100001 or higher (purchased since October 2011), we will convert the timing for $20, plus $9 for return shipping. (If you live in Ohio, there will be an additional $1.45 tax.)

If your serial number is lower than 1100001 (purchased before October 2011), we will replace the circuit board for $50, plus $9 for return shipping. (If you live in Ohio, there will be an additional $3.63 tax.)

Our shipping address:
Grimm
PO Box 2143
Marietta, OH 45750

Please send us the Personal Timer with your payment (make checks payable to “Grimm Scientific”) and a note with your address, phone number, and a message about what you want changed. We will make the conversion and send it back to you. We recommend USPS Priority Mail. If you have any questions, please contact us using our Contact Page (click here).

Field Clocks

Click here to learn how to convert your Field Clock system for the 2019 rule change.