diff --git a/code/obj/item/office_supplies.dm b/code/obj/item/office_supplies.dm
new file mode 100644
index 00000000..2892be2d
--- /dev/null
+++ b/code/obj/item/office_supplies.dm
@@ -0,0 +1,337 @@
+/obj/item/slide_rule
+	name = "slide rule"
+	icon = 'icons/obj/slide_rule.dmi'
+	inhand_image_icon = 'icons/mob/inhand/hand_sliderule.dmi'
+	icon_state = "sliderule"
+	var/icon_base = "sliderule"
+	var/image/slide_image
+
+	var/mathx = 0
+	var/mathy = 0
+	var/ans = 0
+	var/emagged = 0
+	var/brokenRuler = 0
+	var/iconNum = 1
+	var/desc_1 = "Can be used to quickly solve a suprisingly large number of mathmatical calculations.<BR>"
+	var/desc_2 = "The slide rule has not been used yet."
+	var/save_1 = ""
+	var/save_2 = ""
+	var/save_3 = ""
+	var/save_4 = ""
+	var/save_5 = ""
+
+	New()
+		..()
+		src.overlays = null
+		slide_image = image(src.icon, "[src.icon_base][iconNum]")
+		src.overlays += src.slide_image
+		desc_2 = "[src] has not been used yet."
+
+	get_desc()
+		. += desc_1
+
+	attack_self(mob/user as mob)
+		src.browserMenu(user)
+		return
+
+	proc/browserMenu(mob/user as mob)
+		if(brokenRuler > 0.5)
+			user << browse("<TITLE>Slide Rule</TITLE>The slide rule has an existential crisis<BR>", "window=slide_rule")
+			onclose(user, "slide_rule")
+		else
+			var/dat = ""
+			dat += "<A href='?src=\ref[src];add=1'>Addition</A> | "
+			dat += "<A href='?src=\ref[src];subtract=1'>Subtraction</A> | "
+			dat += "<A href='?src=\ref[src];multiply=1'>Multipilcation</A> | "
+			dat += "<A href='?src=\ref[src];divide=1'>Division</A><BR>"
+
+			dat += "<A href='?src=\ref[src];exponent=1'>Exponent</A> | "
+			dat += "<A href='?src=\ref[src];squareroot=1'>Square Root</A> | "
+			dat += "<A href='?src=\ref[src];xroot=1'>Nth Root</A><BR>"
+
+			dat += "<A href='?src=\ref[src];log=1'>Logarithm</A> | "
+			dat += "<A href='?src=\ref[src];logbasex=1'>Log BaseX</A> | "
+			dat += "<A href='?src=\ref[src];ln=1'>Natural Log</A><BR><BR>"
+
+			dat += "<A href='?src=\ref[src];sin=1'>Sine</A> | "
+			dat += "<A href='?src=\ref[src];cos=1'>Cosine</A> | "
+			dat += "<A href='?src=\ref[src];tan=1'>Tangent</A><BR>"
+
+			dat += "<A href='?src=\ref[src];arcsin=1'>Arcsine</A> | "
+			dat += "<A href='?src=\ref[src];arccos=1'>Arccosine</A> | "
+			dat += "<A href='?src=\ref[src];arctan=1'>Arctangent</A><BR>"
+
+			if(src.emagged == 1)
+				dat += "<BR><A href='?src=\ref[src];randomInt=1'>Random Integer</A> | "
+				dat += "<A href='?src=\ref[src];randomDec=1'>Random Number</A><BR>"
+
+			dat += "<BR>Previous Calculations:<BR>"
+			dat += "[(save_5 == "") ? "" : "[save_5]<BR>"]"
+			dat += "[(save_4 == "") ? "" : "[save_4]<BR>"]"
+			dat += "[(save_3 == "") ? "" : "[save_3]<BR>"]"
+			dat += "[(save_2 == "") ? "" : "[save_2]<BR>"]"
+			dat += "[(save_1 == "") ? "" : "[save_1]<BR>"]"
+
+			user << browse("<TITLE>Slide Rule</TITLE>Choose an operation:<BR><BR>[dat]", "window=slide_rule")
+			onclose(user, "slide_rule")
+
+	proc/set_x(var/header)
+		var/temp = copytext(html_encode(input(usr, header, "Slide Rule", "") as null|text), 1, 32)
+		if(temp == "pi" || temp == "Pi" || temp == "PI")
+			mathx = 3.14159
+		else if(temp == "ans" || temp == "Ans" || temp == "ANS" || temp == "answer" || temp == "Answer" || temp == "ANSWER")
+			mathx = ans
+		else if(temp == "e" || temp == "E")
+			mathx = 2.71828
+		else
+			mathx = text2num(temp)
+		if(mathx == null)
+			mathx = 0
+
+	proc/set_y(var/header)
+		var/temp = copytext(html_encode(input(usr, header, "Slide Rule", "") as null|text), 1, 32)
+
+		if(temp == "pi" || temp == "Pi" || temp == "PI")
+			mathy = 3.14159
+		else if(temp == "ans" || temp == "Ans" || temp == "ANS" || temp == "answer" || temp == "Answer" || temp == "ANSWER")
+			mathy = ans
+		else
+			mathy = text2num(temp)
+		if(mathy == null)
+			mathy = 0
+
+	proc/saveEquation(var/equ, mob/user as mob)
+		usr.machine = src
+		save_5 = save_4
+		save_4 = save_3
+		save_3 = save_2
+		save_2 = save_1
+		save_1 = equ
+
+		iconNum = iconNum + 1
+		if(iconNum > 5)
+			iconNum = 1
+		src.overlays = null
+		slide_image = image(src.icon, "[src.icon_base][iconNum]")
+		src.overlays += src.slide_image
+
+		boutput(user, "[desc_2]")
+		src.browserMenu(user)
+
+	proc/selfDestruct()
+		usr.machine = src
+		brokenRuler = 1
+		src.browserMenu(usr)
+
+		var/datum/effects/system/spark_spread/s = unpool(/datum/effects/system/spark_spread)
+		s.set_up(7, 2, src)
+		s.start()
+		playsound(src.loc, "sound/effects/Explosion1.ogg", 35, 1)
+		src.visible_message("<span style=\"color:red\">The [src] explodes!</span>")
+		usr.drop_item()
+		qdel(src)
+
+	/obj/item/slide_rule/emag_act(var/mob/user, var/obj/item/card/emag/E)
+		if (!src.emagged)
+			src.emagged = 1
+			src.browserMenu(user)
+			if(user)
+				boutput(user, "You slide the card along [src].")
+			return 1
+		return 0
+
+	/obj/item/slide_rule/demag(var/mob/user)
+		if (!src.emagged)
+			return 0
+		if (user)
+			boutput(user, "You slide the card along [src]. It returns to normal.")
+		src.emagged = 0
+		src.browserMenu(user)
+		return 1
+
+	Topic(href, href_list)
+		usr.machine = src
+		if(brokenRuler == 1 || !isturf(usr.loc)) return
+		if (!in_range(src, usr)) return
+
+		// Algebra
+		if (href_list["add"])
+			set_x("Number to add?")
+			set_y("Add [mathx] by?")
+			ans = mathx+mathy
+			desc_2 = "[mathx]+[mathy] = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		if (href_list["subtract"])
+			set_x("Number to add?")
+			set_y("Subtract [mathx] by?")
+			ans = mathx-mathy
+			desc_2 = "[mathx]-[mathy] = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		if (href_list["multiply"])
+			set_x("Number to multiply?")
+			set_y("Multiply [mathx] by?")
+			ans = mathx*mathy
+			desc_2 = "[mathx]*[mathy] = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		if (href_list["divide"])
+			set_x("Number to divide?")
+			set_y("Divide [mathx] by?")
+			if(mathy == 0)
+				selfDestruct()
+			else
+				ans = mathx/mathy
+				desc_2 = "[mathx]/[mathy] = [ans]"
+				saveEquation("[desc_2]", usr)
+			return
+		if (href_list["exponent"])
+			set_x("Value to find exponent of?")
+			set_y("Exponent of [mathx]?")
+			ans = mathx**mathy
+			desc_2 = "[mathx]^[mathy] = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		if (href_list["squareroot"])
+			set_x("Value to find square root of?")
+			mathy = 0.5
+			if(mathx < 0)
+				mathx = abs(mathx)
+				ans = mathx**mathy
+				desc_2 = "sqrt(-[mathx]) = [ans]i"
+				saveEquation("[desc_2]", usr)
+			else
+				ans = mathx**mathy
+				desc_2 = "sqrt([mathx]) = [ans]"
+				saveEquation("[desc_2]", usr)
+			return
+		if (href_list["xroot"])
+			set_x("Root value?")
+			set_y("Find the [mathx]-root of?")
+			if(mathx == 0)
+				boutput(usr, "Error")
+			else
+				if(mathy < 0)
+					mathy = abs(mathy)
+					ans = mathy**(1/mathx)
+					desc_2 = "-[mathy]^(1/[mathx]) = [ans]i"
+					saveEquation("[desc_2]", usr)
+				else
+					ans = mathy**(1/mathx)
+					desc_2 = "[mathy]^(1/[mathx]) = [ans]"
+					saveEquation("[desc_2]", usr)
+			return
+
+		//Triginometry
+		if (href_list["sin"])
+			set_x("Sin(x) of?")
+			mathy = 0
+			ans = sin(mathx)
+			desc_2 = "sin([mathx]) = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		if (href_list["cos"])
+			set_x("Cos(x) of?")
+			mathy = 0
+			ans = cos(mathx)
+			desc_2 = "cos([mathx]) = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		if (href_list["tan"])
+			set_x("Tan(x) of?")
+			mathy = 0
+			ans = sin(mathx)/cos(mathx)
+			desc_2 = "tan([mathx]) = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		if (href_list["arcsin"])
+			set_x("Arcsin(x) of?")
+			mathy = 0
+			if(mathx > 1)
+				mathx = 1
+			if(mathx < -1)
+				mathx = -1
+			ans = arcsin(mathx)
+			desc_2 = "arcsin([mathx]) = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		if (href_list["arccos"])
+			set_x("Arccos(x) of?")
+			mathy = 0
+			if(mathx > 1)
+				mathx = 1
+			if(mathx < -1)
+				mathx = -1
+			ans = arccos(mathx)
+			desc_2 = "arccos([mathx]) = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		if (href_list["arctan"])
+			set_x("Arctan(x) of?")
+			mathy = 0
+			if(mathx > 1)
+				mathx = 1
+			if(mathx < -1)
+				mathx = -1
+			ans = arcsin(mathx/sqrt(1+mathx*mathx))
+			desc_2 = "arctan([mathx]) = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+
+		// Logarithms
+		if (href_list["log"])
+			set_x("Log(x) of?")
+			mathy = 0
+			if(mathx <= 0)
+				boutput(usr, "Error")
+			else
+				ans = log(mathx)
+				desc_2 = "log([mathx]) = [ans]"
+				saveEquation("[desc_2]", usr)
+			return
+		if (href_list["logbasex"])
+			set_x("Base of log?")
+			set_y("Base[mathx] log(x)?")
+			if(mathx<=0 || mathy<=0)
+				boutput(usr, "Error")
+			else
+				ans = log(mathx, mathy)
+				desc_2 = "Log[mathx]([mathy]) = [ans]"
+				saveEquation("[desc_2]", usr)
+			return
+		if (href_list["ln"])
+			set_y("Base of log?")
+			mathx = 2.71828
+			if(mathy <= 0)
+				boutput(usr, "Error")
+			else
+				ans = log(mathx, mathy)
+				desc_2 = "ln([mathy]) = [ans]"
+				saveEquation("[desc_2]", usr)
+			return
+
+		// Emag
+		if (href_list["randomInt"])
+			set_x("Upper bound of random integer?")
+			set_y("Lower bound of random integer?")
+			if(mathy>mathx)
+				var/temp = mathx
+				mathx = mathy
+				mathy = temp
+			ans = rand(mathy, mathx)
+			desc_2 = "randomInt([mathx], [mathy]) = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		if (href_list["randomDec"])
+			set_x("Upper bound of random number?")
+			set_y("Lower bound of random number?")
+			if(mathy>mathx)
+				var/temp = mathx
+				mathx = mathy
+				mathy = temp
+			ans = (rand()*(mathx-mathy)) + mathy
+			desc_2 = "randomNum([mathx], [mathy]) = [ans]"
+			saveEquation("[desc_2]", usr)
+			return
+		return
\ No newline at end of file
diff --git a/icons/mob/inhand/hand_sliderule.dmi b/icons/mob/inhand/hand_sliderule.dmi
new file mode 100644
index 00000000..b06ce629
Binary files /dev/null and b/icons/mob/inhand/hand_sliderule.dmi differ
diff --git a/icons/obj/slide_rule.dmi b/icons/obj/slide_rule.dmi
new file mode 100644
index 00000000..9bc7634d
Binary files /dev/null and b/icons/obj/slide_rule.dmi differ