Poundage Ratings
IronMind developed an approximate poundage-rating system for its grippers in 1993, outlined in Captains of Crush Grippers: What They Are and How to Close Them, that provided a quick way to define the relative difficulty of closing one model of CoC Gripper compared to another.
IronMind has pointed out that even under the best circumstances such numbers can be misleading and are easily abused, and stresses that all gripper poundage ratings – including its own – should be taken with a grain of salt.
The following chart, originally published by IronMind, lists each CoC model with its approximate poundage rating:
| Gripper | Poundage Rating (approx) | In Kilograms |
|---|---|---|
| Guide | 60 lb. | 27 kg. |
| Sport | 80 lb. | 36.3 kg. |
| Trainer | 100 lb. | 45.4 kg. |
| No 0.5 | 120 lb. | 54.5 kg. |
| No. 1 | 140 lb. | 63.5 kg. |
| No 1.5 | 167.5 lb.* | 75.7 kg. |
| No. 2 | 195 lb. | 88.5 kg. |
| No. 2.5 | 237.5 lb.* | 107.7 kg. |
| No. 3 | 280 lb. | 127 kg. |
| No. 3.5 | 322.5 lb.* | 146 kg. |
| No. 4 | 365 lb. | 165.5 kg. |
(* These grippers are designed to help bridge the gap between the benchmark-level grippers, and are rated halfway between the No. 1, No. 2, No. 3, and No. 4 CoC Grippers, respectively; thus, these are their interpolated poundage ratings.)
Read more about this topic: Captains Of Crush Grippers