Microsoft Surface has a pixel density of:
147.84

A.K.A. MS Surface RT tablet
Released: 2012

Resolution: 1366×768 10.6″ display

Totaling 1.05mp (megapixels) and having a PPI of 147.84

Category: Tablet
Tags: MS, surface, tablet, windows rt, windows

Microsoft Surface

A display featuring the Surface Pro 3.
Developer	Microsoft
Manufacturer	Pegatron[1]
Type	Hybrid tablets, 2-in-1 detachables, Laptops, all-in-one PCs, interactive whiteboards
Release date	List of Products Surface: October 26, 2012[2] Surface Pro: February 9, 2013[3] Surface 2: October 22, 2013 Surface Pro 2: October 22, 2013 Surface Pro 3: June 20, 2014 Surface 3: May 5, 2015 Surface Hub: July 1, 2015 Surface Pro 4: October 26, 2015 Surface Book: October 26, 2015 Surface Studio: October 26, 2016 Surface Book with Performance Base: October 26, 2016 Surface Laptop: June 15, 2017 Surface Pro (2017): June 15, 2017 Surface Book 2: November 16, 2017 Surface Pro with LTE Advanced: March 6, 2018 Surface Go: August 2, 2018 Surface Pro 6: October 16, 2018 Surface Laptop 2: October 16, 2018 Surface Go with LTE Advanced: November 12, 2018 Surface Studio 2: November 15, 2018 Surface Hub 2:Coming soon
Operating system	Windows 10 The two ARM-based models only support up to Windows RT 8.1
Website	Official website

This righthand infobox courtesy of Wikipedia.