Morning guys.
Hope all are well.
In terms of simple to use Horizontal only rotary lasers, here are two suggestions...
If the price is key, then go for the Fukuda FRE-205 DUO Kit:
https://www.laser-level.co.uk/fukuda-fre-205-duo-laser-kit.html
The Fukuda FRE-205 is a fully self-levelling, has an accuracy of ±3mm @ 30m, rechargeable, horizontal only laser level with a range of 500m diameter. It also has the ability to set slopes and gradients in both the X & Y axis.
It is mainly aimed at the general ground worker but also includes a small cross line laser for internal applications. This can also be removed from the kit.
At the time of writing the cost is £515.99 inc vat.
If you are after a heavy-duty workhorse type laser, the go for the premium brand Spectra LL300N Kit:
https://www.laser-level.co.uk/ll300n-rotary-laser-spectra-ll300n-premium-kit.html
It is a full self-levelling red beam rotary laser which levels on the horizontal. It is accurate to ±2.2 mm at 30 m, range of 500m, has an IP rating of IP66 (Dust tight / Protected against powerful jets of water) and a 5-year warranty. It is rechargeable but can also run on alkaline batteries.
At the time of writing the cost is £575.99 inc vat.
However, if you want to do sloped and gradients you need to add the RC601 remote to the kit which then makes the price: £689.99 inc vat at the time of writing.
Hope this helps,
Mark Roberts
Laser Levels Online
www.laser-level.co.uk