Easy to use, ambient light does not interfere. Measurement is specified at 1 mm, bias at less than 1.5 mm on this model (if you can believe specs). This is better than the USMS requirement of 5 mm resolution.
www.amazon.com/.../B003Q6FGR2
Jeff demo'd this device for me yesterday, pretty slick.
The thing is, the trend is for devices to be getting easier to use and cheaper to purchase; quite a few LMSCs are purchasing one. So the USMS model of expecting more measurements to confirm bulkhead placement is perhaps getting more and more desirable over not measuring at all.
However, accuracy/resolution of the laser DEVICE is not the determining factor in the overall measurement accuracy and precision, at least for non-professionals. (At least, that's my opinion as someone who teaches measurement protocols and theory to struggling undergraduates).
Also IMO, assuming the measurement device is calibrated properly, pool length measurements are going to tend to be biased long whether one uses tape or a laser. Which tends to give the benefit of doubt to the swimmer.
How do you accurately target it, you have to shoot a precise straight line of the shortest distance? Do cell phones interfere or is that last year's news? Do they need recalibrating frequently? Were you able to use it 2 or 3 times getting exactly the same reading w/i the margin of error which you know was accurate from hand measurement? It sounds too good to be true. The basic technology has been there for years but hasn't reliability been an issue?
BTW, Carolina PG broke his wrist and may be done for the tournament.
Easy to use, ambient light does not interfere. Measurement is specified at 1 mm, bias at less than 1.5 mm on this model (if you can believe specs). This is better than the USMS requirement of 5 mm resolution.
www.amazon.com/.../B003Q6FGR2
Jeff demo'd this device for me yesterday, pretty slick.
The thing is, the trend is for devices to be getting easier to use and cheaper to purchase; quite a few LMSCs are purchasing one. So the USMS model of expecting more measurements to confirm bulkhead placement is perhaps getting more and more desirable over not measuring at all.
However, accuracy/resolution of the laser DEVICE is not the determining factor in the overall measurement accuracy and precision, at least for non-professionals. (At least, that's my opinion as someone who teaches measurement protocols and theory to struggling undergraduates).
Also IMO, assuming the measurement device is calibrated properly, pool length measurements are going to tend to be biased long whether one uses tape or a laser. Which tends to give the benefit of doubt to the swimmer.
How do you accurately target it, you have to shoot a precise straight line of the shortest distance? Do cell phones interfere or is that last year's news? Do they need recalibrating frequently? Were you able to use it 2 or 3 times getting exactly the same reading w/i the margin of error which you know was accurate from hand measurement? It sounds too good to be true. The basic technology has been there for years but hasn't reliability been an issue?
BTW, Carolina PG broke his wrist and may be done for the tournament.
