A wrist-worn pressure sensing device (700,800), comprising: a primary device (701,801); a pressure sensor (705,720,805,820); a first strap (710,810) foldable to fix a position of the pressure sensor along the length of the first strap relative to the primary device, the first strap comprising: a first end (713,813) connected to the primary device; a second end (714,814) connected to the pressure sensor and configured to fold back towards the first end (713,813), wherein a relative position of a fold along the length of the first strap dictates the position of the pressure sensor along the length of the first strap relative to the primary device; primary fastening componentry (725,825) located at a second end (714, 814) of the first strap (710,810); and a second strap (712, 812, 912) comprising: a first end (715,815) connected to the primary device; and secondary fastening componentry (730,830) located at the second end of second strap (710,810) useable to adjust a circumference of the wrist-worn pressure sensing device (710,810) without moving the fixed position of the pressure sensor (705,720,805,820) relative to the primary device (701,801) by adjustably engaging the secondary fastening componentry (730,830) with the primary fastening componentry (725,825). a primary device (701,801); a pressure sensor (705,720,805,820); a first strap (710,810) foldable to fix a position of the pressure sensor along the length of the first strap relative to the primary device, the first strap comprising: a first end (713,813) connected to the primary device; a second end (714,814) connected to the pressure sensor and configured to fold back towards the first end (713,813), wherein a relative position of a fold along the length of the first strap dictates the position of the pressure sensor along the length of the first strap relative to the primary device; primary fastening componentry (725,825) located at a second end (714, 814) of the first strap (710,810); and a first end (713,813) connected to the primary device; a second end (714,814) connected to the pressure sensor and configured to fold back towards the first end (713,813), wherein a relative position of a fold along the length of the first strap dictates the position of the pressure sensor along the length of the first strap relative to the primary device; primary fastening componentry (725,825) located at a second end (714, 814) of the first strap (710,810); and a second strap (712, 812, 912) comprising: a first end (715,815) connected to the primary device; and secondary fastening componentry (730,830) located at the second end of second strap (710,810) useable to adjust a circumference of the wrist-worn pressure sensing device (710,810) without moving the fixed position of the pressure sensor (705,720,805,820) relative to the primary device (701,801) by adjustably engaging the secondary fastening componentry (730,830) with the primary fastening componentry (725,825). a first end (715,815) connected to the primary device; and secondary fastening componentry (730,830) located at the second end of second strap (710,810) useable to adjust a circumference of the wrist-worn pressure sensing device (710,810) without moving the fixed position of the pressure sensor (705,720,805,820) relative to the primary device (701,801) by adjustably engaging the secondary fastening componentry (730,830) with the primary fastening componentry (725,825).